Mourinho caused a stir after choosing to start with back-up goalkeeper Antonio Adan for the Malaga match.
Casillas said: “The coach decides which team he thinks is best for each match and you need to accept the decision. I’m not used to being a substitute, but above Iker Casillas or any player is the team.”
In pictures: Bend it like Mumbai yogini Natasha Noel
Photos: Varun, Taapsee, Jacqueline promote 'Judwaa 2' on 'Dance Plus 3'
Instagram's newest sensation: Check out these photos of Bruna Abdullah
Photos: This is how Chitrangda Singh looks without make-up
Photos: Malaika Arora parties wearing see-through lace dress