Sassuolo chief Giovanni Carnevali have set their price for Sime Vrsaljko.
The defender has been linked with Napoli.
Carnevali told TMW: “Vrsaljko is already worth a great deal and today he is one of the most important defenders on the scene. Is the price-tag €15m? I think something more.
“Napoli? Yes, they can be a great solution for him. Considering the important requests, we will meet Eusebio Di Francesco and the staff to define our strategy for the future of Sassuolo."