"I won't sell Nainggolan, not even for 100m," Cellino told GR Parlamento.
"It's an issue of sentiment and a different policy to other clubs. If we spend money to build a new stadium, then we cannot sell our star players.
"Nainggolan is someone I would like to keep at Cagliari. We were offered so much money from abroad in August. Now his agent tells me there are interested clubs, but we don't want to sell."