Arsenal played well in first half and second half they possessed the ball than Manchester United but the only problem with arsenal players they lack the team leader who decides the type of team play and when to make quick decision for example Manchester city they have de bruyne while Manchester United have eriksen who was man of the match today despite all arsenal played well although referee decision was wrong in some moments like harry Maguire incident it was supposed to be penalty and disallowed goal was clear goal but they are Manchester United they can do anything they want in old Trafford.