Burnley new boy Danny Ings has been ruled out for several months after suffering a knee injury in training.
The teenage striker only joined the Championship club on a four-year contract from Bournemouth earlier in the week and has yet to make his debut.
He picked up the injury during an innocuous training ground incident and he is due to undergo a cartilage operation next week.
The Clarets have confirmed that the 19-year-old is not expected to return to fitness until early 2012 and his injury will be a major blow to manager Eddie Howe.
"It's a serious one," Howe told the club's official website. "Danny is going to have an operation next week but we are looking at four or five months and it's a real blow for us.
"He did it on Thursday in shooting practice There was nobody else involved and he just landed on his shooting foot and felt something go in his knee.
"He's never had a knee problem before and sometimes you try and work out a reason for these things. We've been scratching our head, but it's just fate really and that happens.
"We bought him for the future and he's still only 19. He will come back from this, but it's a blow to lose him just as he is settling into the club."
The Burnley boss must now decide whether to enter the transfer market to bring in a short-term replacement in attack for Ings.