Pre-season offers managers an opportunity to test tactical ideas and trial changes, Arsenal boss Mikel Arteta will do exactly that this summer. On Sunday, Arsenal will jet off to America, where they will play three friendlies against Premier League opposition. First, the Gunners will take on Bournemouth and Manchester United in Los Angeles, before travelling to Philadelphia for a face-off against Liverpool. Mikel Arteta will not have his full complement of first team players with him on this trip. A number of Arsenal stars are being afforded an extended holiday this summer, having taken part i…
