Wolves have confirmed that Kevin Doyle is to be sidelined for between four and eight weeks.
The striker damaged his knee while on international duty with the Republic of Ireland on Saturday, lasting just 17 minutes of a 2-1 win over Macedonia.
Initial fears suggested that he could be out of action for some time, with it quickly established that he had suffered medial ligament damage.
Doyle was sent for further tests upon returning to Molineux on Monday and they have backed up the initial prognosis.
That means the 27-year-old may not figure again this season, with there only eight games of the Premier League season remaining.
Mick McCarthy will be hoping that Doyle can shake off the ailment in time to aid Wolves' survival bid, but he accepts that the outlook does not look good.
The club claim rehabilitation periods for this kind of injury can vary, but admit there is a chance they could be without their highly-rated frontman for up to two months.
Head of medical development Steve Kemp told the club's official website: "The scan has confirmed that Kevin has torn his MCL (medial collateral ligament).
"We will be working with Kevin to get him back as quickly as the injury allows but the likely time span is anywhere between four and eight weeks."