Many Manchester City fans were left slamming the display of the referee in the first half of their game away at Club Brugge in the UEFA Champions League.

Istvan Kovacs of Romania was put in charge for the group stage match in Belgium, and there were a few fouls given against Pep Guardiola's team that were questionable.

Jack Grealish was penalised early on in the half when through on goal, Kevin De Bruyne was on the end of a controversial decision against him, and Aymeric Laporte was given a yellow card just after the half hour mark, despite it looking like that he did not make much contact at all with the player.

Grealish also had a goal disallowed for a foul in the build-up, which a lot of MCFC supporters thought was very soft to say the least.

Man City fans on ref display

These members of the Etihad Stadium faithful slammed the performance of the ref in the first half on Twitter, with one even going as far as to claim that he was 'awful':

"This ref is awful"

Credit: @EthanMekoUK

"How bad is this ref so far? jeezzz"

Credit: @ThorpPau

"This ref has already thrown the game and we’re just over 10 minutes in"

Credit: @HansSwoleman

"Ref having a nightmare"

Credit: @cjkms98

"Ref's a disgrace"

Credit: @NateKRono

"Ref stinks already not surprised"

Credit: @citybyron