Five Things We Learnt From Arsenal 2-0 Borussia Dortmund Including Yaya Sanogo Surprise And Injury Problems Continuing

2) Alexis Sanchez is always going to be key

Arsene Wenger’s side may have played well in their Champions League encounter, but the Chilean still stood out. It would seem that even when he isn’t being forced to drag his team from the mire Sanchez has made the Gunners reliant on him.