Lukaku will do his pre-season training with Chelsea following a successful loan spell at The Hawthorns.
McAuley told the Sunday Mercury: "Everybody will be after him for next season because he's a great talent but he likes it here.
"He's got 17 goals for us this season and if Chelsea don't keep him hopefully he will come back and get us 20-plus next season.
"He's been a force for us. He is a great player and we saw that on Sunday, when he came off the bench and changed it for us.
"He scored three goals and we couldn't ask any more from him.
"I will be on at him every day during the summer."