Allan Saint-Maximin is likely to miss Wednesday's clash with Manchester City - according to Steve Bruce.
The French winger came off early in the 2-2 draw with West Ham United and is now doubtful for the encounter at the Etihad Stadium.
Isaac Hayden is also out of the clash against last year's treble winners after a hamstring injury.
After the game Bruce was asked about Saint-Maximin's fitness levels, he said: "Unfortunately I don't think I could ask Allan to go again on Wednesday, that's for sure.
"Our two, arguably, fittest players in Sean Longstaff and Isaac Hayden have both got hamstring injuries.
"They're not serious but it's two or three weeks which probably rules them out."
Bruce will hold a roll call in training on Monday morning, Bruce added: "We'll see where we are [for Wednesday].
"Five games in 15 days in the Premier League is a tough ask.
"We'll see how they all are in the next 24-48 hours."
