What standard of success should Arsenal (and for that matter, Unai Emery) be measured against this campaign? What's fair and reasonable for this lot to achieve? Will they achieve it? Who will put more pressure on Emery: the fans , the media , or the board ? Will the players embrace and adapt to Emery's style of play? For how long? Will there be a tipping point? Who wore it better David Luiz or Mattéo Guendouzi?