Belgian international Nainggolan has been in the sights of several bigger Italian sides in recent months, with Inter Milan -- now owned by Indonesian businessman Erick Thohir -- reportedly among his suitors.

Nainggolan, born in Belgium to an Indonesian father and Belgian mother, was pivotal in a 1-1 draw at home against title challengers Napoli on Saturday -- after which he claimed: "I haven't received any offers and I'm happy where I am at Cagliari."

Cellino, however, was quoted in a web report on La Gazzetta dello Sport as saying: "Nainggolan will surely leave, there are six or seven clubs in for him.

"If he doesn't want to leave, I will sell him myself."