Arsene Wenger: 'I wouldn't like to be Mike Dean tonight... Costa should have been sent off twice,' says Arsenal boss after Chelsea defeat

Arsenal manager not impressed with the referee

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Arsene Wenger has hit out at referee Mike Dean after Arsenal lost 2-0 to Chelsea at Stamford Bridge.

The Gunners boss was clearly not impressed with the referee after he ended the game with nine men; Gabriel Paulista reacted to provocation from controversial striker Diego Costa and Santi Cazorla was shown two yellow cards.

The Blues went on to win 2-0 with goals from Kurt Zouma and Eden Hazard, whose shot was deflected in off Calum Chambers.

"(There is a) big sense of injustice," Wenger told BT Sport 1. "I think Diego Costa is a red card.

"I wouldn't like to be Mike Dean tonight because I cannot understand the situations. Twice he (Costa) should have been sent off.

"Look at the situation well before the cross comes in, he hits him (Laurent Koscielny) in the face on purpose.

"He makes a fuss of it. In every game there is aggravation but he gets away with it because of the weakness of the referee.

"We are guilty because we gave in on that and responded to it. We knew before the game that he was only looking for that and when he touches him he goes down like he has been killed."

In response, Chelsea boss Jose Mourinho said: "The game is about all different aspects. The technical, emotional, physical and with a combination of these factors normally the best team wins. We were the best team. We were dominant, we were in control.

"I played my first derby as manager in September 2000 and I remember my words to my players. To win the derby - emotional control. I always repeat the same words before derbies.

"For me it was a fantastic performance (from Costa). He played the game like the game has to be played. He's fast, he's aggressive and he's good to recover the ball and offers us different qualities."