New Wolves manager Julen Lopetegui has told veteran forward Diego Costa to be on his best behavior.

The former Chelsea and Atletico Madrid forward was a surprise pickup for the Premier League side before the World Cup break.

Costa will be back from suspension and is ready to face Gillingham in the Carabao Cup this week.

“We hope it'll be the best impact from not only him but the rest of the players," Lopetegui said.

“Diego is here to help us – he is trying to work very hard and he's very focused.

“He knows this is a big opportunity for him, he was more or less out of high level football for six month, now he again has the chance to play in the elite – the Premier League.

“He knows that and he's working very hard to recover his best version and we're going to help him do that. It's not just about Diego, it's also the rest of the players, but I hope his experience can help us.

“But he has to push the bad things away. I want to see his character, playing football, not making silly things."