I think every team in the Champions League needs to follow Manchester City. Teams should think about what kind of tactics Man City is applying. I hope the rest of the teams will perform well this season. I want the Premier League to become more competitive.
Football games are not decided by the tactics a team uses on the field of play; rather, they are decided by the type of players a team possesses who will work well with the techniques the coach wishes to employ. The players on a team may not be able to play according to the coach's ideal style of play, despite the coach's best efforts.
Advising a team to use Manchester City tactics won't work because every team has a pattern that works for them. Without first figuring out how to build their team and counter those teams whose tactics cause them to lose games when playing against them, they can't start to divert their tactics to another club's tactics.