The boys were hard at work on Tuesday ahead of their trip to Cologne to take on the German side in Group H of the Europa League.
We beat the Bundesliga side in our opening game in the competition, and only require a point on Thursday night to secure top spot.
Our club photographer was at London Colney for training and sent back these exclusive images.
Copyright 2018 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source.