Cagliari say Radja Nainggolan will cost any interested buyer over €15m, while they’ve also provided updates on the futures of Michael Agazzi and Davide Astori.
The Belgium international has been linked with Roma and Inter, as well as a number of foreign sides.
“Nainggolan is worth more than €15m,” Rossoblu sporting director Nicola Salerno told Sport Italia. “Only President Massimo Cellino knows the precise figure.
“However, it is pointless talking about it right now as there are no negotiations taking place. There is time though.
“We are not interested in any player plus cash deals though. If someone wants Nainggolan then he will cost that much.”
Salerno was also questioned on Fiorentina’s proposed bid for goalkeeper Agazzi, a man who broke into the Italian national squad at the end of last season.
“Fiorentina are not involved in any Agazzi discussions at all. At this moment, Cagliari have no intention of selling him to the Viola.”
The questions inevitably moved on to centre-back Astori, a stopper of reported interest to Milan and Manchester City amongst others.
“Milan were very keen in June,” the official revealed. “There was something there, but that is now part of the past. There is nothing now.
“City? They may like him, but we’ve had no contact with them whatsoever.”
Think you know your Italian football? Share your knowledge, tips and comments to win cash prizes in OLBG's tipster competition  - £5,000 monthly.