Bukayo Saka, Martin Odegaard, and Kai Havertz have started the season fit while William Saliba, Jurrien Timber, and Cristhian Mosquera are recovering from injuries. Saliba’s back injury may keep him out until November, while Timber is cautiously returning from a groin issue. Mosquera suffered a hamstring problem but could return soon, and Bruno Guimaraes is recovering from a groin injury. Arsenal’s revamped medical staff aims to reduce injury issues affecting the squad.