The current deals of veteran striker Emile Heskey, defender Carlos Cuellar and number two goalkeeper Brad Guzan run out in June.
Villa have held initial negotiations with Cuellar and Guzan, with the former already indicating he would like to remain at Villa Park.
"Alex has always been one of those guys who prefers to do his business at the end of the season. He knows the most important thing is Villa winning games.
"His thinking is 'I'd rather leave it as much as I possibly can' and I think the players we are working with understand that."