Napoli have reportedly made Cagliari an offer to sign the trio of Radja Nainggolan, Davide Astori and Victor Ibarbo.
The Gazzetta dello Sport are today suggesting that Azzurri chief Aurelio De Laurentiis has phoned counterpart Massimo Cellino to make a significant bid.
Nainggolan is a central midfielder who has been on the transfer radar of Milan, Inter, Juventus and Roma in the past.
Astori, meanwhile, is an Italian international centre-back who has been linked with the Stadio San Paolo outfit on a regular basis over the last 24 months.
The 23-year-old Ibardo is a Colombian attacker who has been paired with Italian champions Juventus in recent days.