Chelsea's Michael Essien shoots during their English League Cup quarter final soccer match against Newcastle United in Newcastle, northern England December 20, 2006.[Reuters]

Ghana midfielder Michael Essien signed a new five-year contract Monday that will keep him at Chelsea through 2012.

The 24-year-old Essien is in his second season at Stamford Bridge. He has played in all but one match this season, making a total of 46 appearances in a variety of positions in both midfield and defense.

"It didn't take me long to decide to sign," Essien said. "I am really happy because I came here to stay a long time. I really work hard in training and do everything to succeed. I have the ambition to win a lot of trophies for the club."

Essien joined the Blues from Lyon in 2005 for what was then a club-record fee, reported to be 24.4 million pounds (US$47 million; euro38 million at the time), and helped the club win its second Premier League championship in a row.

Chelsea is currently in second place, nine points behind Manchester United, but still in contention in the FA Cup and Champions League.

"It is great to have somebody like Michael, who has already made a huge contribution, commit for another five years," Chelsea chief executive Peter Kenyon said. "We spent a summer getting him, it wasn't easy, and it is nice to be on the next step."