Arsenal fans have taken to Twitter to discuss the controversy surrounding the second half penalty that saw them fall to a 1-0 Europa League defeat in Cologne.

Arsenal fans have taken to Twitter in complaint after they saw their side fall to a 1-0 Europa League group stage defeat against Bundesliga strugglers Cologne thanks to a dubious second-half penalty.
In the end, the result proved to be irrelevant, with The Gunners guaranteeing a spot in the next round and topping the group, with Red Star Belgrade, Cologne and BATE Borisov all battling for the final qualification spot in Group H.

However, the decision to award a penalty to Cologne after the hour mark following an alleged foul on Sehrou Guirassy by Mathieu Debuchy has sparked widespread controversy on Twitter.
There appeared to be minimal contact between Debuchy and 21-year-old Guirassy as the Frenchman went tumbling to the ground, reigniting the debate surrounding Video Assistant Referees and whether they should be brought into the European game.

Here’s how Arsenal fans reacted to the dubious decision on Twitter, following the game:
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