Valencia coach Emery confident keeping Villa from Liverpool
After sitting out Saturday's comfortable 2-0 victory over Cardiff, Villa is expected to play his first pre- season game in a friendly against Alex Ferguson's new-look United on Wednesday night.
Emery accepts scouts will be out in force again at Old Trafford but maintains they will be wasting their time.
He said: "Valencia want to keep David but he also wants to stay.
"That was an unbelievable feeling for the club and we don't believe he will change.
"He is willing to play for us and everything else is just speculation."