There were concerns over the striker’s fitness after he picked up a toe injury in the first leg, which ended 1-1.
The 28-year-old trained on Tuesday and could play with an injection.
“He is happy to take an injection, which shows his feeling about the game and the club,” said Moyes.
He added “he is massively keen to be involved. He has not trained all week so we will have to be wary of that, but we will do everything we possibly can. We need him as well because he is a really important player to the team”.