Atalanta striker German Denis insists he has nothing to prove against Napoli.

Denis will face his old club as Serie A's top scorer.

"I've already scored against Napoli while I was playing for Udinese," the 30-year-old said. "Therefore it wouldn't be a new thing for me…

"I have no desire for revenge, I just want to demonstrate how much I am worth - but not to Napoli, to Atalanta.

"I want to illustrate my ability to my new squad, this club, the fans and myself."