Motta has backed McKennie to be "useful," but he did not call upon the American midfielder on Monday.
A brace from Dusan Vlahovic and a debut goal from 21-year-old academy product Nicolo Savona secured the result for the Bianconeri as they made it six points across the first two matchdays in Serie A. They are the only team across the league to complete such a feat and sit atop the table with a two-point lead.