Currently, Manchester City doesn't have any competition in the Premier League. That didn't relax after their triple trophies. They are still buying more quality players so that the team will maintain its quality. I have not seen any club that is prepared for next season like City. There is also a sense of good relationship between the club owners and Pepe Guardiola because he always gets what he wants.
I think it is safe to say that Pep Guardiola knows how to win the Premier League, and that's very scary for the rest of the teams in the league, look at how many EPL titles he has won since he became manager at City, some he won on the final day, some with just a point, it doesn't matter, he just knows how to win it. Last season was their third title in a row, if they win it next season, they'll create a new record and become the first team to win the EPL four times consecutively, but who is to say they can't do it, which team is going to stop City, personally i can't see any. Pep is prolly going to turn the EPL into a farmers' league.