Furious fans point out Arsenal got away with the exact SAME offence that saw Tyrone Mings give away a bizarre penalty in Champions League defeat... so why weren't the Gunners punished?
Mings, who was making his Champions League debut for Unai Emery 's side, was punished for a lapse in concentration a few minutes after half time, as he picked up Emiliano Martinez 's goal kick.
