The 29-year-old came on for the final 16 minutes at the Stadio Olimpico in the Rossoneri's 3-2 victory but then fell ill on the way back to Milan.

A club statement read: "Antonio Cassano felt unwell on Saturday evening's flight back from Rome. The player is undergoing tests at the Policlinico in Milan."

Cassano's wife and mother arrived at the hospital this morning along with the club's chief doctor Rodolfo Tavana, who said: "The boy was not well, we're investigating."