Riccardo Montolivo has received death threats for refusing to sign a new Fiorentina contract.
Now police are investigating several messages posted on the 26-year-old's Facebook page.
Fiorentina chief executive Sandro Mencucci said: "The threats to Montolivo? I want to brand this behaviour as stupid. The threats were made a week ago by an imbecile. I want to close the discourse regarding Montolivo. We have said what we had to say."