London - West Ham United striker Andy Carroll will be out of action for up to six weeks after tearing a ligament in his knee, manager Sam Allardyce confirmed.
The 26-year-old was forced off in West Ham's midweek 0-0 draw at Southampton as Allardyce's side finished the game with only nine men following a red card for goalkeeper Adrian.
It is another setback for 26-year-old Carroll who missed the start of the season and much of last year with injuries.
"I think a full diagnosis is yet to come," said Allardyce.
"It is likely to be a few weeks, the medial ligament on the side of his knee has a tear in it from a fairly innocuous collision.
"Hopefully (he will only miss) four to six weeks if we are lucky, depending on Andy's recovery rate. It is a big blow for him and a big blow for us but it is one we have to cope with.
"It is traumatic when someone is going through a period when in a short time they overcome one injury and another occurs."