If Baines is fit he'll start, but if not Oviedo should play as he's not done anything to warrant been benched.
Howard or Robles is another tough one. I think with Bobby's recent comments about Howard that he'll keep his place - and I don't understand people saying he had a bad game vs. Chelsea - he was solid and commanding and looked better than he has done all season. Then again Robles has done well and he could flourish as our 'cup keeper'.
----------------------Howard--------------
Coleman---Stones---Jagielka---Baines (if fit)
-------McCarthy---Barry---Besic-------------
----Lukaku----Naismith------Mirallas--------
Subs: Robles, Gibson, McGeady (if fit), Oviedo/Garbutt (depending on Baines), Kone, Atsu, Barks