Since the arrival of Russian billionaire Roman Abramovich in 2003, Chelsea have spent hundreds of millions on players. Some have done well for the club, and others have not.
Here, GiveMeSport looks at five of the worst modern day Blues transfers from the Russian billionaire's tenure.
5. Shaun Wright-Phillips
After Chelsea spent £21million on Manchester City midfielder Shaun Wright-Phillips, much was expected of the Englishman. His performances were limited in his first season at Stamford Bridge and only started 15 league games.
Wright-Phillips left the club in 2008, being sold back to former club Manchester City, only making 81 league appearances in the three years he spent at Stamford Bridge. He currently plays for Queens Park Rangers.
4. Yossi Benayoun
Israeli midfielder Yossi Benayoun was a very highly rated midfielder, due to his performances for Liverpool and West Ham. This led to a £5.5million move from Liverpool.
- Chelsea criticised for stifling academy with Abramovich spending
- Pep Guardiola rejected Chelsea after Roman Abramovich meeting
- Does Chelsea owner Roman Abramovich want more appreciation?
Unfortunately, Benayoun couldn't recapture his form and only played 14 league games. After two poor loan spells to Arsenal and West Ham, Benayoun was released in the summer of 2013. He currently plays for Maccabi Haifa, in Israel.
3. Juan Sebastian Veron
A Premier League flop even before he signed for Chelsea. The Argentine midfielder was signed by Manchester United, but failed to live up to expectations.
Chelsea signed him for £15 million, hoping he could turn his fortunes around. But, Veron did not, and only made 15 appearances for Chelsea. He retired in 2014 after a spell at Argentine club Estudiantes.
2. Fernando Torres
Chelsea's most expensive player ever Fernando Torres is another player that didn't live up to expectations at Stamford Bridge. A £50 million move from Liverpool saw unprecedented pressure heaped on the Spaniard's shoulders.
Since signing in 2011, Torres has only managed 20 league goals in 110 league games for Chelsea. In the summer of 2014, Torres was loaned to Italian side AC Milan.
1. Adrian Mutu
Romanian striker Adrian Mutu made a fabulous start to his Chelsea career by scoring four goals in his opening three games, thus justifying his £15.8million price tag.
However, during the 2004/05 season, Mutu was sacked by Chelsea for a breach of contract, after a failed drugs test.
This led to a £20,000 fine and a seven-month global ban. And in 2008, the FIFA Dispute Resolution Chamber ordered Mutu to pay €17,173,990 in compensation to Chelsea.
What do you think? Many players have been brought to Stamford Bridge during the Roman era, but who do you think is the worst? Comment below.