Arsenal get on a much-needed mini-streak of two wins in two games as they outgun Cardiff City with the help of another Mustafi set piece goal and the new Aubame-Zette dynamic duo. We'll discuss continued haphazard defending, Xhaka's loosening grip on a holding midfield berth and Lacazette's emerging hybrid striker role, plus a little sidebar on Ozil's current role in the squad and what actually makes for a useful midfielder...