Tyrone's Gerard Cavlan has become a fresh injury concern ahead of the Ulster SFC decider with Monaghan on Sunday after boss Mickey Harte revealed that he has picked up a hamstring strain.
Cavlan joins Cormac McGinley on the doubtful list but it looks as though Niall Gormley and the influential Stephen O'Neill will be available.
"Cormac McGinley didn't train at all last week or over the weekend so he has to be in the very doubtful category," Harte said.
"Gerard was coming along very well in training after missing the Donegal game but unfortunately he has now picked up a bit of a hamstring problem so that is giving us cause for concern.
"Stephen O'Neill is still not 100 per cent. We are still having to manage his injuries but it's moving in the right direction and we are hopeful that he will be in contention for this weekend's game," added Harte.