Arsenal goalkeeper Wojciech Szczesny is facing UEFA punishment after appearing to make an obscene gesture following his dismissal during their Champions League defeat to Bayern Munich.
The 23-year-old Polish stopper goalkeeper was red-carded after 37 minutes for wiping Arjen Robben out in the penalty area.
After the red card, Szczesny, who was replaced by Lukasz Fabianski, appeared to make an obscene gesture before walking down the tunnel to the changing rooms.
