Sunderland boss Lee Johnson has described Nathan Broadhead's injury as a 'disaster' for his side after the Everton youngster limped off against Arsenal in the Carabao Cup.
The forward completed a loan move to the Black Cats in the summer after spending the entire campaign with Everton last season.
And the Welshman scored his sixth goal in as many games to reduce the arrears to 2-1 against the Gunners at the Emirates Stadium on Tuesday night.
However, he limped off on the stroke of half-time with a hamstring injury that he picked up after a collision with Arsenal’s Rob Holding.
Sunderland went on to lose the tie 5-1 as Mikel Arteta’s side scored three times in the second half to book their place in the last four.
And speaking on Broadhead’s injury after the game, Johnson said: "It's a disaster. It's his hamstring, the other one. I don't know if I've run over a black cat or what.
"From Jordan Willis, to Broadhead, Aiden McGeady, Luke O'Nien and everyone else in between, it's hard to take.
"We're going to need help in January for sure. We're going to need to find a way of bringing in quality to help the boys."