Sampdoria chief Beppe Marotta insists there's no problem between coach Walter Mazzarri and striker Antonio Cassano.

"Cassano? Unfortunately anything that happens is followed closely by the media, in reality there has been no disturbance with Mazzarri," said Marotta over Cassano's stroppy substitution against Roma on Sunday.

"He has simply said that he could still continue and that he was physically well, but the coach explained that it was better for him to avoid unnecessary cards."