Casemiro finished a successful loan spell at Porto before returning back to Real Madrid this summer. The defensive midfielder made 41 appearances in Portugal and scored four goals. Rafa Benitez has a wealth of midfield talent at his disposal including Luka Modric, Toni Kroos, Asier Illarramendi and Lucas Silva so it's unlikely that the Brazilian will get too much game time next season. At 23, a move to Juventus could see his career flourish a lot quicker.