It's all depends on Ayew in my opinion, if he's up for it then who knows.
Cast your mind back to the Reading game...
Ayew comes on after an hour with not a lot happening, Cabango knocks an aimless ball that flies over Ayews head, AA turnes and gives BC an earful, Ben says something back and Ayew goes absolutely ballistic and has to be held back, 20 seconds later Ayew plays a worldie of a ball inside to Grimes (I think) that's starts the move for Lowes equaliser. Ayew celebrates like he's just won the lottery, then goes on to put us 2-1 up.
So yes, a fired up Ayew could just be enough.