Bayern Munich defender Holger Badstuber has been ruled out for 10 months after having his cruciate ligament in his right knee removed, his club have confirmed.
The 24-year-old was operated on by renowned knee specialist Dr Richard Steadman in Colorado on Monday.
A club statement said: "Due to extensive ruptures, the player's cruciate ligament is no longer functional and was removed. Before the cruciate can be reconstructed using a surgical tissue graft replacement, the incisions and holes from the original op must heal completely.
"Until then, Holger Badstuber will maintain his physical fitness in sports rehab. The doctors in charge of the case estimate the player will be fit again in around 10 months. The injury is not career-threatening."
Badstuber last week suffered his second cruciate ligament rupture this season, having only returned to training following the initial injury in December.
Cole posted several messages on Twitter on Monday appearing to indicate he had no future at the club he joined in July 2006 from London rivals Chelsea and the Hammers confirmed this morning that his contract would not be renewed.
The 29-year-old, who has seven England caps, has been far from his best this season, scoring just twice in 25 appearances, and manager Sam Allardyce felt it was best if Cole sought a move away from Upton Park.
"Carlton's contract has come to an end and we have decided not to renew that contract," said the former Bolton and Newcastle manager.
"Carlton's need at his age is to be playing football as often as he can. From our point of view we felt it better that he found pastures new.
"We can only thank him for his outstanding commitment and service to West Ham United over the last seven years."
Cole scored 59 times in 237 appearances for the east London side and was a key part of the side that achieved promotion from the npower Championship a year ago with 15 goals, including the opener in the play-off final victory over Blackpool at Wembley.
"Life is filled with ups & downs today is adown but I'll be back! Carlton Cole/CFC as I have been called has left the building ?UNDERCHUFFED," he wrote on Twitter on Monday.
"I want to thank the West Ham fans for their support especially the 1's who made the away games feel like a home 1 ?COYI.
"I came to East London not knowing what to expect but I'm glad i did the last 7 years I've met a lot of good honest decent people ?THANKYOU."
His departure will leave Allardyce, , scrambling for attacking reinforcements.
The Hammers are reported to have agreed a fee with Liverpool for England striker Andy Carroll, who made an impression on Allardyce after a successful season-long loan at Upton Park, and the final decision now lies with the 24-year-old who last night withdrew from the England squad with a foot injury.
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