West Brom midfielder Zoltan Gera will miss the rest of the season, the club have confirmed.
Gera was injured in the first half of Saturday's FA Cup third-round tie at QPR and scans have confirmed the 33-year-old has ruptured the anterior cruciate ligament in his left knee.
An operation is scheduled for later this week with Gera looking at up to nine month's on the sidelines as his knee recovers.
Gera suffered a similar injury last November but was fit in time for the start of the season and manager Steve Clarke is confident he will battle back to fitness again.
“I’m devastated for Zoltan,” Clarke told the club's official website.
“He’s a terrific guy and professional and I want to thank him for his contribution this season. It has been invaluable.
“He’ll now get our full support during the rehab process. Zoltan has already proven he can come back from this injury once and produce at the highest level and I have no doubts he will do so again.”