Napoli have been warned they must break the bank to prise Gokhan Inler away from Udinese.

The agent of Inler has invited Napoli to improve their contract offer if they want the Swiss international.

"Napoli and Udinese reached an agreement some time ago," Dino Lamberti told Premium Calcio.

"But, let's say, that the right phone call has not been made to us just yet."