Arsenal are now heading into their final pre-season friendly on the back of what was a seriously impressive win over Bayer Leverkusen. The Bundesliga champions made the trip to the Emirates on Wednesday night where they were left with their tail between their legs. Mikel Arteta‘s side took no time in putting two past the visitors as Arsenal eventually sealed a 4-1 victory in north London. The Gunners came into the game on the back of a defeat against Liverpool in their final game in the United States. But Wednesday’s win saw some seriously positive performances from Arsenal with Arteta sharing…