Wolves goalkeeper Wayne Hennessey has been ruled out for around six months after suffering a serious knee injury in the 0-0 draw at Sunderland.
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Hennessey has been one of the club's best players this season but saw a knee specialist on Tuesday who confirmed damage to his cruciate ligament.
"Our worst fears have been realised," said Wolves' Head of Medical Services Steve Kemp, "Wayne has ruptured his anterior cruciate ligament and will have surgery this afternoon. He will be out for around six months."
The Wales international had made 58 consecutive Premier League appearances going back to November last season and will miss the chance to play for Team GB at this summer's Olympics.
Talking about Hennessey's injury, boss Terry Connor said: "Wayne just felt his knee during the game. He went to catch a ball right at the end and didn't think too much of it. But he felt slightly worse on Sunday so the medical guys wanted him to have a scan.''
Reserve goalkeeper Dorus de Vries will make his League debut for Wolves in Sunday's home game against Manchester City.