Lukaku endured a tough European Championships with Belgium and returned to pre-season training late, but Koeman insists that he is getting back to his best.
He said,”I expect a lot.
“He is a very good player and knows that he can improve.
“Of course, he is an important player because he is normally the top scorer of the team – he showed that with Belgium on Tuesday.
“And I hope he will score next on Monday.
“Always strikers need goals for their confidence.
“But don’t forget he had a difficult pre-season – he was coming (back to Everton) late (after Euro 2016).
“I think now he is close to his best performance level and we will see that.”