Burnley have suffered a major blow with the news that Michael Duff faces a lenghty spell on the sidelines.
Duff has been forced to go under the knife after suffering serious knee and hamstring injuries.
The 27-year-old has sustained a cruciate ligament injury and torn his hamstring and he is expected to be sidelined for up to six months.
OperationClarets boss Steve Cotterill told the club's official website: "Michael has just had an operation and his lateral ligament has snapped off the bone.
"His hamstring tendon has snapped off a bone on the lateral side.
"But the worst part of it is he has probably got to go back in about six to eight weeks, because he has snapped his cruciate ligament as well."
Duff is likely to miss the rest of the season with the injuries and the news is a blow for Northern Ireland chief Nigel Worthington as it will mean the versatile defender will miss the remainder of their Euro 2008 qualifying campaign.