Napoli boss Walter Mazzarri is eager to not over hype Lorenzo Insigne.

The striker is back at Napoli after a successful season at Pescara.

"Insigne is not lacking the skills, but he has to prove that he can withstand the pressure of this environment," said Mazzarri.

"A young player can only become a top player when he has the character to support his talents. He needs to keep his feet on the ground, he needs to perform with consistency and we have to leave him in peace."