Napoli president Aurelio de Laurentiis wonders if Sheikh Mansour will soon grow tired of Manchester City.
Defeat in the Champions League leaves City staring at an early exit in their debut season in the competition.
And De Laurentiis said: "I think Mansour just wanted a toy. He says that he doesn't want immediate success but if they don't win something quickly, he could just go somewhere else and buy another toy."