These June will mark Roman Abramovich's seven years at Chelsea. These seven years has seen Chelsea climb from a middle-ranked team in the English Premier League to superpowers in European football.
Such an incredible ascent has been possible due to the huge amount of fund invested by our owner. Chelsea have an enviable team with world class players.
But this golden era of Chelsea has also seen some mistakes been made which have cost Chelsea dearly. These slideshow will delve into those mistakes and their effects.
Juan Sebastian Veron also known as the Little Witch was purchased from Manchester United for £13.5 million in 2003. Veron had been a complete flop in Manchester but Chelsea wanted to give him another chance.
Veron let the Blues down miserably. The investment was a flop show. He played a mere 14 matches for Chelsea in the 2003-04 season. After Mourinho took the reins of Chelsea he was loaned off to Inter Milan for two years and thereafter to Estudiantes during the last year of his contract after which he was let go.
The signing was a complete waste as Veron contributed nothing to Chelsea except the loss of £13.5 million and a solitary goal in his painful three years stay at Chelsea.
The World Cup winning coach was brought in as the manager on 1 July 2008 amid much joy to the Blues' fans. The season got off to a good start under him and bright prospects were expected from his association with Chelsea.
But as the season progressed the dream run started turning into a nightmare as Chelsea performed poorly. There were reports of player unrest in the dressing room. Many players openly expressed their dissatisfaction. After a 0-0 draw with Hull City Scolari was sacked as Chelsea manager on 9 February 2009.
His appointment was a complete disaster. He had tried to bring into effect a completely different method of gameplay from the one the Blues' were adapted to. The Brazilian's plans totally flopped and after just six months he was relieved of his duties. The Blues' had to shell out another extra £12million as compensation package for Scolari and his staff.
This mistake cost Chelsea dearly as they finished the season third. Although in the end magic man Hiddink gave something for the Blues' fans to cheer about through an FA Cup.
The Portuguese tactician was one of the best things to happen to Chelsea. Soon after Abramovich bought the club Mourinho was brought in as manager replacing Claudio Ranieri. He utilized the money intelligently and brought in players who would fit his style of gameplan.
The "Special One" got his equations correct and Chelsea won two consecutive Premier Leagues, two League Cups, an FA Cup, and a Community Shield. Under his spell Chelsea transformed from an average club to a powerhouse of European football.
However, the Special Era did not last long as differences between him and Abramovich started to mount regarding the signing of Shevchenko much against the Portuguese's wishes.
Abramovich's insistence on Mourinho playing the Ukrainian was widely seen as reason of further friction in relations between the two men. On 20 September 2007 Mourinho left Chelsea "by mutual consent."
After Mourinho left Chelsea saw a dip in their form. The next season was highly unsuccessful under Scolari, who was eventually sacked halfway through. Hiddink took responsibility as caretaker manager for the rest of the season. Chelsea presently has been performing well under new manager Ancelotti.
Mourinho's departure was shocking and sudden. After his departure Chelsea has not seen much success. Unless Chelsea wins the league or an European honor the gap left by the "Special One" will not be filled.
Andriy Mykolayovych Shevchenko is regarded by some as the worst signings made by Chelsea during Abramovich era. His signing is viewed by many of the Blues' faithful as the prime reason for the Special One's departure.
The high scoring Ukrainian striker was signed from AC Milan on May 2006 for a then record transfer fee of £30.8 million much against the wishes of the then manager Jose Mourinho.
His spell at Chelsea was a total flop. In his first season he scored a mere 14 goals from his 51 appearances. There after he never had a permanent first team place. He was out most of the time due to his injury.
In the 2008-09 season he was loaned out to AC Milan. He returned the following season but was ineffective and was left as a squad player. In August 2009 the Ukrainian left for Dynamo Kyiv ending a disastrous spell.
His signing was the worst thing for Chelsea. The huge transfer fee was a complete waste. Abramovich must have felt the pain of losing those £30.8 million.