Casemiro has been a key figure at the base of Real Madrid's midfield and is heavily relied upon by the manager Zinedine Zidane.
The Brazilian has racked up 3,120 minutes in 35 games so far this season and this kind of output is seen as unsustainable.
As a result, Los Merengues are said to be looking to bring in a player who can relieve Casemiro of his duties now and then.
Anytime the 28-year-old has dropped out of the side, Madrid's performances have suffered.
Zidane has experimented with Fede Valverde taking up Casemiro's role, but it became clear that the Uruguayan is better suited to a position further up the pitch.
Real Madrid do have a potential future solution coming through their youth system in the shape of Antonio Blanco.
It's thought that his strength, ability in possession and astute tactical awareness are the perfect ingredients for the role.
It's reported that the youngster is attracting interest from a host of top clubs across Europe.
