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.

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.