Sunderland forward Duncan Watmore is expected to miss the remainder of the season after undergoing knee surgery.
The injury suffered in last week's home draw with Millwall is the latest setback for the 22-year-old, who missed the last six months of the 2016-17 season and the start of the current campaign.
Black Cats boss Chris Coleman told the club's website: "This season probably won't happen for him. I told Duncan on Sunday if it's bad news then the worst thing you can do is put a time on it, but he'll be chasing time as he'll want to be back.