Manchester City host Arsenal on Saturday with the teams level on points, City having played a game more. The chance to take the advantage in the race for Champions League qualification is on the line, with the Gunners third and City outside the UWCL places in fourth. Both clubs will also retain hope of winning the title. City still have to travel to Arsenal in the league and their 1-0 extra-time defeat at Arsenal in the Continental Cup semi-final on Wednesday showed the tightness of the margin between the teams. What did we learn from that encounter, what can we expect on Saturday and what could decide the outcome?