"Hopefully we'll qualify and I think we have a great chance," said Gardner. "Obviously the gaffer will stay at Villa, and that's how we want it."
O'Neill has shaped a squad at Villa Park full of young English talent, with the likes of Gardner and Agbonlahor impressing.
"The gaffer likes to bring in young players, he's signed Under-21s from last season like Scott Carson, Ashley Young and Nigel Reo-Coker," added Gardner.
"He gives us a lot of praise in training and has a laugh as well. He has to take a lot of credit for getting the best out of the young players at the club."