3) Pierre-Emerick Aubameyang
The 25 year old striker from Gabon is turning into one of the stars of this current Dortmund crop. This is his second season at the Signal Iduna Park, in his debut season he managed 13 goals and will be looking to increase that tally without Lewandowski in the side.
Aubameyangs biggest weapon is his pace. Acknowledged as one of the fasted players in world football, he can cause more than a few problems for Arsenals defence, especially the sluggish Per Mertesaker
He scored his first goal of the season at the weekend after coming off the bench and if he is deployed as a substitute again, tired Arsenal legs may struggle.