It was only a couple of seasons ago that Maicon was known as the best right-back in the world and was one of the most sought-after defenders on the transfer market.
He has seen a slight decline in his performances recently, but there is no denying he is still a high-quality player.
There have been reports that Maicon could be on his way to Stamford Bridge this summer, following the departure of Jose Bosingwa.
Chelsea have been injecting a lot of youth players in to the club recently, so at 31 years old, it could be argued that bringing in Maicon could go against this policy.
But Chelsea are a top club, and top clubs should be looking to bring in top players, something that Maicon is.
Here are five reasons that the Brazilian defender would be an inspired signing for the Blues.
Chelsea fans perhaps more than most can appreciate what experienced, older players can do for a club.
Players like Frank Lampard and Didier Drogba were integral to Chelsea's success last year, despite having been written off by some people.
Their experience and wisdom of the game were a massive help to Chelsea and helped keep them going midway through a disastrous season.
Maicon is no different—he has bags of experience and has won everything there is to win in Italy and Europe.
With someone like him at Chelsea, he can be a big voice that the younger players can look up to, especially Chelsea's young Brazilian contingent.
Maicon is not going to be a long-term player at Chelsea, but when they bring in a younger right-back, Maicon could be a great figure to help them settle and improve their game.
Last season, Branislav Ivanovic split a lot of his performances between playing at right-back and centre-back.
He is a more-than-capable defender in both positions, but the main reason he was deployed in the middle of the defence was due to Bosingwa getting so many games.
Ivanovic can provide very adequate cover for the centre-backs should they be injured or suspended, but this leaves a void at right-back.
This is why Maicon would be a perfect part-time right-back, because when he is fit, there's no denying that he is still one of the best full-backs out there.
Ivanovic would still play the majority of games, but with Maicon, Chelsea would have a quality backup player, and he would allow Ivanonic to provide cover at centre-back without Roberto Di Matteo worrying if he has good enough protection at right-back.
Jose Bosingwa wasn't exactly performing like a Chelsea player should during the latter stages of his time at Stamford Bridge.
His departure didn't come as a shock to most of us, and not many fans were exactly disappointed when they found out the news.
If Maicon was to come into the side, Chelsea fans could probably expect a better player defensively and someone who can deliver crosses, which by the end of his Chelsea career Bosingwa was lacking occasionally.
His reported £6 million transfer fee is on the cheap side despite his age, and considering he will probably only be a part-time player, he can provide a service probably better than Bosingwa was doing.
When some Premier League fans think of Maicon, they picture him getting destroyed by Gareth Bale when Inter Milan met Spurs in the Champions League.
But really, there aren't many defenders on this planet who can match Gareth Bale for pace, so the style in which the defence play can be integral against fast wingers.
Chelsea's defence don't use their pace to stop attackers, as was quite evident when they adopted a very high line under Andre Villas-Boas. Let's just say it didn't work.
With Maicon getting on in years and not being the quickest of players, the Chelsea system should fit him perfectly.
Money, money, money—that's been the theme for Chelsea's summer so far.
The Blues have spent more than £50 million already this summer, and it's not even August.
If the rumoured price tag for Maicon is true, then he could prove to be an absolute bargain.
A few seasons ago, Maicon would have set a club back a sum probably on the wrong side of £20 million, but Chelsea and Real Madrid are reportedly fighting for the defender at around £6 million.
If a player comes to Chelsea at £30 million, he is expected to perform straight away, which is not always the case, considering they haven't been tested in a top league.
But with Maicon you have a player who has done it all and knows how to win it all.
He won't be flustered by big games or big players, and at £6 million, one impressive season would be enough to prove he was an inspired signing.