West Ham United will be without centre-forward Andy Carroll for up to two months due to a knee ligament injury.
Carroll, on loan at Upton Park from Liverpool, picked up the problem in West Ham's 1-0 defeat at Manchester United on Wednesday.
Speaking ahead of his team's match at home to Chelsea on Saturday, West Ham manager Sam Allardyce revealed the England international is unlikely to be back in action until January.
"It is pretty severe - lateral ligament, I think," Allardyce told Sky Sports.
"We did not expect it to be quite as severe as it was but it looks like maybe six to eight weeks. So that is a bit of a blow for us and Andy.
"But we must solider on. There is not a lot we can do about these trauma injuries."