The Serie A side have been linked with a move for their former frontman, who has had a tumultuous season with Man City.
While reports have stated that a reunion would be possible, Moratti has attempted to distance the Italian giants from the controversial forward.
"For the moment he's a Man City player," said Moratti. "We followed what happened - he's always the same and he's technically really good.
"But we have not made moves, he's not in our plans, even if we know he's really strong."