Sunderland striker Ross Stewart has been ruled out for the rest of the Championship season with an Achilles injury and faces surgery next week.
Stewart had played a key role for the Wearsiders since returning from a thigh problem, scoring 11 goals in 15 games.
The former Albion Rovers, St Mirren and Alloa forward has 40 goals in 80 matches for Sunderland since arriving from Ross County in January 2020, and 85 in 222 career games.
Sunderland saw on-loan Everton striker Ellis Simms recalled last month but signed Leeds forward Joe Gelhardt on loan last week.