#3 Tottenham Hotspur
Mauricio Pochettino has taken the time to balance his squad well in all aspects.
Pochettino never signed a player in the summer transfer window since 2003. This January, he signed Lucas Moura and had started him in the opening PL games for Tottenham. Lucas already showed his astonishing play against Manchester United, thus indicating that he can be a starter and give an extra boost to the front-line pairing up with Harry Kane. Tottenham is also so far unbeaten in the league and might as well win the league.
#4 Arsenal
Bit of a shaky start for Unai Emery but he might be on track finally.
Arsenal was off to a shaky start this season but let's be honest, any team would be unsteady by playing 1st two games of the premier league against the giants such as Manchester City and Chelsea. However, again, this is a marathon, not a sprint. With Arsenal securing the first 3 points against West Ham they look confident in playing the next few games.
#5 Manchester United
Too early to rule out Jose Mourinho from the Premier League.
Manchester United have lost two games so far, but it would be a shame to rule them out of the league so early. They still have one victory over Leicester, and they can prove that they could again turn the situations upside down. They have lost 2, not 20. Keep Faith on Jose, and he is not the one to keep quiet.