Arsene Wenger labelled Diego Costa ‘clever’ after the striker was involved in the incident which saw Per Mertesacker sent off during Arsenal’s 1-0 defeat to Chelsea.
Mertesacker was shown a straight red by referee Mark Clattenburg after just 18 minutes at the Emirates for bringing down Costa when he was in on goal.
The forward, who was involved Gabriel’s red card against Chelsea earlier this season, gave the visitors the lead five minutes later with a strike that eventually handed the visitors all three points, leaving Arsenal boss Wenger frustrated.
"We had a mountain to climb with 10 men but even then, I believe there was enough there to come away with a 1-1 draw," Wenger told Sky Sports.
"We cannot influence the decision of the referee. Costa got two player sent off in two games on our side so he’s clever.