#1 Casemiro
Carlos Casemiro is going to be the most important player in this World Cup for Brazil. The Real Madrid defensive midfielder is heavily trusted by Tite. It was Casemiro who nullified Lionel Messi in the Superclasico and Brazil went on to win the match by a 3-0 margin.
Casemiro is going to create the difference in the squad. He will bring new dynamics to the side. With his excellent hold-up play and distribution, he will be the anchor between the defence and the attack. He will allow Marcelo and Danilo to go forward as he will drop down to support Thiago Silva and Miranda and will create a 3-man defence. He will, again, create a defensive screen, letting Paulinho move forward. His crunching tackles and excellent game-reading will give their opponents very little room to move forward.
Casemiro has made 48 appearances with Real Madrid and won the UEFA Champions League and will be eager to win the World Cup with his national side as well.