Let's not overreact.
City and Chelse are probably the top two. But Everton, United, Arsenal and Spurs all have their own problems. Can't see any two of these teams pulling away to cement the top 4.
Everton? What problems. As a fan I'm happy with the way they are travelling. They put stones and jags together and have been solid the past two games. The Chelsea game was a minor blip on the radar and they played well enough to beat arsenal.