In order to pave the way for further progress this season, Arsenal had to say goodbye to some popular faces in N5 this summer. Mikel Arteta and Edu had a clear strategy for the transfer window: offload Arsenal players on the periphery of things and find high-calibre replacements. All in all, Arsenal were successful in that plan, and it was redeeming to see Raheem Sterling replacing Gabriel Martinelli against Tottenham Hotspur, not Reiss Nelson. Nelson hasn’t often put a foot wrong in an Arsenal shirt, but he’s simply not quite at the level that Arteta needs. That being said, Arsenal also sold …