Danny Ings is set for another lengthy period on the sidelines after Burnley confirmed the striker would require a knee operation.
Ings injured his left knee in action for the Clarets against Rochdale last week and scans have now revealed the extent of the damage.
It is not thought to be quite as serious as the injury to his other knee last summer that kept him out until February, but a specialist has still recommended surgery.
The estimated timeframe for the 20-year-old's recovery is between three and six months, and manager Eddie Howe has backed him to still play a key role later in the season.
"It's unfortunate that Danny requires an operation and we really feel for him," Howe told the club's official website.
"He had been looking in fantastic shape in pre-season and was a big part of our plans for the start of the season.
"But we will give him all the time and support necessary to get over this latest setback and he will still have a major role to play for us as the season goes on."