Norwich City captain Grant Hanley faces surgery on his Achilles injury and is likely to miss the Championship run-in.
The Scotland international centre-half was stretchered off in the Canaries' 2-0 win at Blackburn on Good Friday.
"It's a serious Achilles injury. He needs surgery, which is set up for Tuesday at the minute, and it will take a long time (to recover)," head coach David Wagner told BBC Radio Norfolk.
"After surgery we can say more, but it's a serious Achilles injury."
Norwich are two points and two places outside the play-off places, and will also have to play their final five games of the season without defender Ben Gibson and midfielder Kenny McLean.