However, Cellino is confident that his compatriot will be cleared of any wrongdoing - but warned that he will "kick his arse" and terminate Bellusci's contract if evidence proves otherwise.
"Bellusci is no racist," he told the Yorkshire Evening Post. "I spoke with him and he said 'you must be joking, I said nothing like this to [Jerome].' He is surprised by this. He is shocked.
"I don't allow racists at this club and I won't allow racists at this club ever. If one of my players is a racist, I'll kick his arse and kick him out before the FA has a chance. Bellusci says he spoke [to Jerome] in Italian. I don't know if he speaks Italian too but Bellusci swears to me he said nothing racist.
"He was pissed off, sure, because he got hit in the neck and the face but he denies anything racist. I believe him and and I'll support him. I'll write to [the FA] to clarify my position on Bellusci and racism. If any Leeds player was shown to be a racist, he'd be out. That's my philosophy and my promise."
Bellusci signed a four-year deal with Leeds in August following a £1.6m move from Catania.