Federico Chiesa is believed to be of interest to Juventus, Inter and Napoli, but Fiorentina would demand at least €60m.
The 21-year-old is already an Italian international, and is seen as one of the rising stars of Italian football.
Juve have been linked with him since last summer, and former Bianconeri CEO Giuseppe Marotta, who will take a role with Inter, is known to be an admirer.
Napoli had an offer turned down last summer, and Corriere dello Sport reports that all three teams are still interested.
The Viola won’t sell Chiesa on the cheap though, with the newspaper stating that €60m is their minimum asking price.
Juve have already started to lay the groundwork, while Napoli President Aurelio De Laurentiis has a direct line to the Della Valle brothers.
Inter’s strategy will revolve around Marotta, who already negotiated for Chiesa last summer and has a good relationship with the Viola after doing deals for Marko Pjaca and Federico Bernardeschi.