Arsenal’s summer transfer window is beginning to gain some traction as the players now train in the Los Angeles heat. Mikel Arteta has had to endure a slow start to the summer window with Arsenal only just getting up and running. The Gunners recently got off the mark in the window with the signing of young goalkeeper Charlie Setford from Ajax. However, this is not the big money signing which is going to bolster their efforts in dethroning Manchester City this season. One of the players who they have identified to potentially improve the starting XI has now possibly had his head turned by Barce…