The Costa Rica international has endured a difficult season but has been heavily backed by one of the club's former stars
Former Real Madrid star Iker Casillas is unhappy that Keylor Navas has been jeered at Santiago Bernabeu, believing him to be one of the best goalkeepers in the world.
Navas has made a number of errors in recent weeks as Madrid hope to win La Liga and retain their Champions League crown, with sections of the home support turning on the Costa Rica international.
However, Casillas, now at Porto after losing his place to Navas, cannot understand the criticism of a keeper he rates highly.