The Gunners have a 3-0 aggregate lead against the Swedish side and should progress to the last-16 with relative ease.
While it was far from a full house at the Emirates, those at the game raised a collective eyebrow when the Gunners took to the pitch wearing their blue away kit.
It turns out UEFA asked Arsenal to wear their second kit as there was potential of a clash with Ostersunds away kit, which is red and black.
However, the Swedes were wearing their white home kit at the Emirates, meaning there wouldn’t have been much of a clash had Arsenal worn their red and white home kit.
It’s not the first time this season that UEFA’s peculiar rules have impacted Arsenal. Henrikh Mkhitaryan was forced to wear the no.77 shirt in the first leg in Sweden after the corporation blocked him for wearing his designated no.7 shirt because Alexis Sanchez had worn it earlier in the competition.