Real Madrid star Arda Guler was caught disagreeing with head coach Alvaro Arbeloa, after being brought off in Wednesday's 4-2 Champions League loss to Benfica. UEFA via Getty ImagesReal Madrid star Arda Guler was caught disagreeing with head coach Alvaro Arbeloa, after being brought off in Wednesday's 4-2 Champions League loss to Benfica. In-game, as Madrid trailed 3-2 and were searching for an equaliser to compliment Kylian Mbappe’s brace, Arbeloa reacted by making a treble substitution in the 78th minute. What Real Madrid boss Arbeloa said about the Benfica defeat“We have lacked many things. It was a Champions League match against a team that was playing for its life and that put intensity and attacked very well.