Burnley have announced that striker Martin Paterson will undergo knee surgery after sustaining an injury during Tuesday night's Carling Cup defeat to Barnsley.
Paterson was stretchered off during the first half of a game that finished 3-2 to the Championship side at Oakwell, along with goalkeeper Brian Jensen, as Burnley suffered a double injury setback.
But while Jensen could be fit to face Tottenham Hotspur at the weekend after being diagnosed with a dead leg, the outlook is not so encouraging for his team-mate, Paterson.
After falling awkwardly, Paterson has damaged his knee cartilage and will now require surgery before Burnley can give a more accurate timeframe regarding his recovery.
"We have had mixed news on the two lads," manager Owen Coyle told the club's official website. "As we thought, Brian suffered a dead leg and I am hopeful he could be fit for the weekend.
"But the news on Martin Paterson is a little worse. He has tweaked a cartilage and will undergo an operation tonight [Wednesday], at which point we will know further how long he will be sidelined for."
Burnley confirmed on Monday that midfielder Chris McCann will be sidelined for up to three months due to knee ligament damage sustained in a challenge with Sunderland defender Michael Turner at the weekend.