With the summer transfer window in mind, it seems as if Mikel Arteta and Arsenal should already be targeting some obvious improvements. Arteta needs a new striker, there’s very little doubt about that right now. Gabriel Jesus definitely has a place at the top of the game, he shouldn’t be going anywhere. But with Eddie Nketiah not entrusted to start during another Jesus’ injury absence, the writing should be on the wall. Arsenal need a striker who can score 20 goals a season, and someone who Arteta fully believes in. That being said, a central midfielder should also be on the menu, with Barcelo…