Arsenal are set to travel to the USA for their pre-season tour, but they played one training ground game before jetting off. Arsenal played against League One side Leyton Orient behind closed doors at the Sobha Realty Training Centre a day before they fly to Los Angeles. A lot of first-team stars were in action, with many substitutions made throughout the game as Mikel Arteta’s side recorded a dominant 2-0 victory. Goals from Gabriel Jesus and Emile Smith Rowe handed Arsenal the win, with several academy talents featuring alongside some big names in the first team. Arsenal beat Leyton Orient 2…