Milner was rested for the 1-0 win at Bolton last weekend after suffering from a sore Achilles but has resumed training and is expected to play if he suffers no reaction.
Up for the Cup: Milner (r) and Villla will be looking to avenge their recent 7-1 mauling in the Premier League by Chelsea
Dunne has been nursed through recent weeks with a similar injury and pulled out of training on Thursday, but O'Neill is optimistic he should be available.
Villa (provisional squad): Friedel, Guzan, Cuellar, Luke Young, Beye, Dunne, Collins, Davies, Warnock, Downing, Milner, Petrov, Sidwell, Delph, Ashley Young, Carew, Agbonlahor, Heskey, Delfouneso, Albrighton, Clark.
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