#2 Insigne vs Mustafi
If there is one thing Arsenal fans did not want to hear, it was Insigne being fit to play at the Emirates. The attacking force of Dries Mertens and Lorenzo Insigne has run riots in Italy, often replicating the same form in European Nights as well.
Latest reports from Italy confirm that Insigne is fit to start against Arsenal, after suffering an ankle injury a couple of weeks ago. He bagged a few minutes against Genoa and Carlo Ancelotti is likely to deploy his fierce duo in order to break Arsenal's incredible defensive home form.
On the other hand, Unai Emery and the medical staff will have to take a late call on whether they should include Koscienly in the squad or not. However, it seems the captain won't be a part of the team for the first leg, which puts immense pressure on Arsenal's unsung hero Shkodran Mustafi.
Though it was a below average team performance from Arsenal against Everton, one cannot claim that Mustafi was not at his best. The German defender was in top form, often making last-ditch tackles and interceptions, trying his best to keep the manager's faith in him.
Mustafi has been a better player this season in comparison to his previous seasons - thanks to Unai Emery. He will have to fill Koscienly's boots once again this season, as injury concerns and age has often impacted Laurent's fitness.