Ivory Coast international Salomon Kalou has signed a new three-year contract with Chelsea.
The 24-year-old moved to Stamford Bridge from Feyenoord in the summer of 2006 and made his debut in the Community Shield defeat to Liverpool at the start of the 2006-07 season.
He has gone to find the net 31 times in 93 starts for the Blues and 66 appearances from the substitute's bench.
Chelsea boss Carlo Ancelotti told the club's official website: "I am very pleased that Salomon has signed a new contract with us as he is an important player for this club.
"He is always well-motivated and works hard at his game at all times. Because of this, I am sure that Salomon will become an even more important player for Chelsea in the future."
Kalou's previous contract had been due to expire at the end of this season, with his new deal worth a reported £60,000 a week.
On Sunday, Kalou had been quoted as saying while on international duty: "Signing this deal with Chelsea has freed my mind to concentrate on football."