The end of Arsene Wenger’s reign at Arsenal saw the club make some questionable transfers, and these mistakes took years to rectify. Mikel Arteta has now taken Arsenal to a place where his young squad are challenging for the Premier League title, but it took a long time for him and Edu Gaspar to correct the mistakes made by previous regimes prior to their returns to the club they played for. In Wenger’s final season, there was chaos on and off the pitch as several key players left, and Arsenal had the unenviable task of replacing them. Whilst they did find success for a while with January sign…