#4 Casemiro
Position: Defensive Midfielder
Casemiro's quick rise to fame at Real Madrid over the last 3 years was bound to force coach Tite to include him in the squad. Over the past two years, he has become a prominent part of the Real Madrid side and has made 48 appearances this season.
In 3 years, he has won 11 major titles at the club level and has become one of the best defensive midfielders in the world. However, he has only made 23 appearances for Brazil since 2011 and isn't very experienced on the international stage.
He will have to compete with Manchester City's Fernandinho for a spot in the side, but after winning the third consecutive Champions League title, Casemiro is bound to be high on confidence and Tite will do well to tap into it.