Just as the January transfer window shut its doors, speculation circulating around the summer transfer window began.
Usually it is during the summer where we see the superstars of world football change clubs.
In recent years, players like Cristiano Ronaldo, Didier Drogba and Zlatan Ibrahimovic have all switched clubs during the summer transfer window. This summer should be no different as plenty of big names are already being linked with summer transfers.
Here is a list of 20 players who could be switching clubs during the summer transfer window.
Barcelona fans were handed a shock in January when goalkeeper Victor Valdes announced he would leave the club after his current contract runs out (h/t SI.com).
Valdes has been with the Catalan club for his entire professional career, and instead of ending his career with the club he will be looking to pursue other career opportunities.
For Barca to get the best value for the 31-year-old, they will have to sell him during the summer transfer window.
The big question that surrounds Valdes is where he will go after he leaves Camp Nou.
No clubs have been linked with the keeper just yet, but expect Valdes to garner plenty of interest from elsewhere once the season finishes.
With the departure of Victor Valdes imminent at Barcelona, they will need a replacement for their starting goalkeeper.
That replacement should come in the form of Manchester United's David De Gea.
During the January transfer window, De Gea was linked with a move to the Camp Nou (via Daily Mail).
The 22-year-old is no stranger to La Liga as he played for Atletico Madrid for two seasons before moving to Old Trafford during the summer of 2011.
De Gea would be a perfect fit at Barcelona and he would be a player that would potentially play between the posts at the Camp Nou for the next decade.
However, Barcelona will have to deal with Sir Alex Ferguson, who is no pushover when it comes to negotiating a transfer.
Adding to the potential goalkeeping carousel is Asmir Begovic, who is one of the top contenders to join Manchester United if De Gea were to leave Old Trafford.
Begovic is currently playing at Stoke City, who have already prepared for his summer exit by signing Jack Butland from Birmingham City in the January transfer window.
It was reported on Sunday that due to the signing of Butland, a move to Manchester United was in the future of the Bosnian international. (via the Mirror).
The Daily Mail confirmed the report and added that either David De Gea or Anders Lindegaard will be sold to make room for the 25-year-old.
This season at Stoke City, Begovic has given United plenty of reasons to sign him during the summer, as he has recorded an EPL-high nine clean sheets.
Another goalkeeper who is likely to be on the move this summer is Liverpool's Pepe Reina.
Reina has appeared in 19 matches this season under manager Brendan Rodgers, but it seems like the 30-year-old has his heart set on a return to Spain.
During the January transfer window, Reina was linked with Barcelona (via The Sun) and it is likely that the Camp Nou could be the final destination for the Spanish international.
Reina could also depart for another club in La Liga this summer as it looks like his time at Anfield is coming to an end.
When Reina departs for a new club, expect Brad Jones to step into the spot as the first-choice keeper at Liverpool.
2013 is expected to be the year of Omar Gonzalez in America.
The Los Angeles Galaxy defender is one of the best prospects in MLS at the moment and he could be the next player to leave the league on a transfer to Europe.
There is no doubt that foreign clubs are paying more interest to the MLS with Geoff Cameron and Brek Shea both leaving for Stoke City in the past year, and Kei Kamara on loan at Norwich City from Sporting Kansas City at the moment.
With strong performances for the United States during CONCACAF World Cup Qualifying and in the MLS for the Galaxy, Gonzalez could easily make his way on to the radar of the biggest clubs in Europe.
Eitenne Capoue has long been a target of both North London clubs and he could finally make his move to the Premier League this summer.
Capoue has been the best player for Toulouse in Ligue 1 this season and a move by the 24-year-old to a bigger club should be imminent.
It was reported that both Arsenal and Tottenham failed to bring in the Frenchman at the end of the January transfer window (via Metro).
Another club who could potentially join the race for Capoue's signature in the summer is PSG, who were mentioned in the same Metro report by the player's agent Mino Raiola.
Ajax Amsterdam has produced plenty of star defenders over the years with Gregory van der Wiel and Jan Vertonghen being the two latest defenders to leave the club.
This summer another player could be on the way out of the Amsterdam Arena.
Toby Alderweireld came up through the Ajax youth system and he has been a regular in the club's starting 11 since 2009.
Now it looks like the 23-year-old Belgian could leave the club if the price is right this summer.
Back in December, Sky Sports reported that Alderweireld would be open to moving to the EPL.
Just a month before that report broke, it was reported that both Tottenham and Newcastle were interested in signing the 23-year-old, but they will have to pay top dollar for the defender (via Daily Mail).
Tottenham could be the favorite to sign Alderweireld because the Belgian's former teammate at the club level and teammate at the international level, Vertonghen, is employed by the North London club.
One of the players who will definitely leave his current club during the summer is Chelsea's Frank Lampard.
In January, it was reported by the Daily Mail that Lampard would not be offered a new contract by Chelsea and that he will leave the club in the summer.
The one club that has been heavily linked with Lampard is the Los Angeles Galaxy.
The Galaxy have a designated player spot open on their roster after the departure of David Beckham to PSG, and Lampard could be the perfect fit in the Galaxy midfield to replace Beckham.
A report broke in January via the Daily Mail that the Galaxy already had a deal in place for the 34-year-old England international.
While nothing is official at the moment, it looks like Lampard will be on his way to America this summer.
It has been made clear that Malaga are not in the best financial shape at the moment.
With that being said, the Spanish club may be forced to sell their best player this summer if things do not improve.
Isco could make a pretty profit for Malaga, and there are plenty of clubs interested in signing the 20-year-old midfielder.
Chelsea and Manchester City have both made it known that they are in the chase for his signature (via Daily Mirror).
This season, Isco is the leading goalscorer for his club with eight goals and he has also contributed two assists in 26 appearances.
With all of the change going on at Tottenham Hotspur over the past year, Scott Parker has become expendable.
While he has started in his club's most recent matches, Parker will be seen as a surplus player when the summer comes around.
With Sandro returning from injury and Lewis Holtby already at the club, Parker could find himself to be the odd man out when it comes to selection for a consistent spot in Andre Villas-Boas' starting 11 next season.
Luckily for the 32-year-old England international, he has an admirer at another club in the form of former Spurs manager Harry Redknapp, who is now managing at Queens Park Rangers.
If QPR avoid relegation, expect Parker to switch clubs in search of more playing time as he looks to make the final cut for the England squad heading to the FIFA World Cup in Brazil.
Nani could become a casualty of a new player coming into Manchester United this summer.
With Sir Alex Ferguson keen to use Wilfried Zaha on the wing next season, and with Ashley Young and Antonio Valencia already in the squad, Nani could easily be shipped off to a new club.
The one club that has been linked the most with the Portuguese winger is Juventus (via the Daily Mail).
Another club that could see Nani on their depth chart next season is Zenit St. Petersburg, who failed to bring in the 26-year-old at the end of the summer transfer window.
So far this season, Nani has also made five starts for United because of injuries.
The good news for both player and club is that Nani has returned from injury and started his first match since November over the weekend at Fulham.
One of the most coveted players during the summer transfer window will be Marouane Fellaini of Everton.
The 25-year-old has been one of the best players in the Everton squad since he joined the club from Standard Liege in 2008.
This season, the Belgian has reached a new level of brilliance with 11 goals in all competitions for the Toffees, which is a career high for the midfielder.
Fellaini has long been a target of Chelsea and he is likely to move to Stamford Bridge in the summer, according to this report from the Daily Mail.
While Everton manager David Moyes would love to keep the Belgium international at Goodison Park, it seems like the Toffees will be ready to cash in on their star player when the summer comes around.
Another Belgian who could be on the move this summer is Christian Benteke.
Benteke has been one of the few bright spots in the Aston Villa lineup this season, and if the Villains are relegated this season, the 22-year-old will most likely leave the club.
The Belgium international has scored 10 goals in 22 EPL appearances this season.
Benteke's best performances this season came against the two clubs based on Merseyside, he has scored twice against both Everton and Liverpool.
The future of the young forward will depend on Villa's EPL status, but if the Villains' form stays the way it currently is, Benteke could be searching for top-flight football this summer.
Another player who is stuck in the middle of a relegation battle at the moment is Iago Aspas of Celta Vigo.
Aspas has developed into one of the breakout performers in La Liga this season and he could be searching for a new club when the summer rolls around.
Just like Benteke, the fate of Aspas will be determined by whether his club can avoid relegation and stay in the top flight.
During the summer transfer window, expect some of Spain's best clubs to join Chelsea and Reading in the race to sign the Spanish forward.
Another revelation of the La Liga season has been Leo Baptistao of Rayo Vallecano.
Baptistao has scored six goals in La Liga this season and he has gained comparisons to former Rayo Vallecano player Michu, who has proven to be a great bargain signing by Swansea this season.
The 20-year-old Brazilian forward has been linked to Manchester United, Liverpool (via the Daily Mail) and Atletico Madrid (via Laliganews.tv) in the past month, but he has remained at Rayo Vallecano for the time being.
Baptistao should be one of the more unknown transfer targets this summer to the casual fan, but if he is half as good as Michu has been this season, his transfer will be deemed a success.
Peter Odemwingie made an absolute fool of himself at the end of the January transfer window as his supposed transfer to Queens Park Rangers fell through.
It would amaze anyone if Odemwingie stays with West Bromwich Albion after the end of the season.
Odemwingie has scored five goals this season for the Baggies in 18 appearances but do not be surprised if those totals remain the same when the season ends.
The 31-year-old has previously played in France with Lille and in Russia with Lokomotiv Moscow.
Not many clubs may want Odemwingie after his recent antics, but expect a club to take a chance on the Nigerian and take him off of the hands of West Brom.
Thomas Ince is now the best player in the Championship without a contract with an EPL club.
Ince will most likely follow in the footsteps of Wilfried Zaha and Jack Butland and join a club in the English top flight over the summer.
Toward the end of the January transfer window, Reading emerged as the favorite to sign the 20-year-old from Blackpool (via the Daily Mail). Liverpool also showed interest in Ince but a potential deal was halted due to a dispute over the price of the player.
Ince is one of the best young players in England and a move to the EPL will benefit his development greatly.
The worst nightmare of Tottenham fans will most likely come true this summer as Gareth Bale is set to leave the club for greener pastures.
The most likely destination for the 23-year-old Welshman is Real Madrid.
The latest link between the two parties came in the past week when Bale claimed that he wanted to emulate Cristiano Ronaldo (via Daily Mail).
While he will cost a good amount of money, all signs are pointing toward Bale exchanging White Hart Lane for the Bernabeu this summer.
If he does move to Real Madrid, Bale would become the second Spurs player to do so in the last two years after Luka Modric made the switch last summer.
Radamel Falcao is having yet another superb season for Atletico Madrid and it looks like his current club will be cashing in on the Colombian this summer.
There is no doubt that Europe's biggest clubs will be lining up to sign the Colombian forward this summer, and it could come down to who is the highest bidder.
This season for Atletico Madrid, Falcao has scored 22 goals in all competitions, including the hat trick he scored against Chelsea in the UEFA Super Cup to begin the 2012-13 campaign.
With a regime change expected at Real Madrid this summer, one of their best players could be out the door as well.
The one club in the world who could afford Cristiano Ronaldo at the moment is PSG, who stated that they do have the money to buy the player this summer (via Daily Mail).
Since Ronaldo joined Real Madrid he has been in the shadow of Lionel Messi as the superstar in La Liga, but if he moves to Ligue 1 this summer he will become the superstar of the French league.
Ronaldo's transfer will be dependent on Jose Mourinho leaving Real Madrid as manager of the club, which is something that becomes more likely by the week based on Real Madrid's current form.
Who do you think is guaranteed to make a move over the summer?
Comment below or leave me a comment on Twitter, @JTansey90.