Pep Guardiola is not only a great coach but in the figure of a shrewd coach. He has proven capable of inventing tactical innovations for every team he leads. Since he first handled Manchester City, he has been able to make Manchester City's game always develop from season to season. Last season, Pep Guardiola changed John Stones' position from a central defender to a defensive midfielder. Then, there is Manuel Akanji who has been transformed into an all-round defender.
Indeed, it is worth admitting that the tactics possessed by a Pep Guardiola are very great because they are able to change players for the better on the lines he wants so that the Manchester City team really looked stronger last season and this was proven by the treble winner they got. Next season Manchester City will still be very strong even though several other teams are also trying to get stronger, but Pep Guardiola will of course always make a better tactic in order to get another treble winner next season.
To achieve a treble winner in a row is indeed very difficult because there is no history of a manager or a club that has been able to achieve a treble winner in a row. However, as a coach, Pep Guardiola has set a record for being the first coach to be able to win the treble twice with different clubs. Next season Manchester City remains a candidate for the championship in the premier league and champions league. Not because City is the defending champion, but as long as there is Pep Guardiola as a coach, Man City has always been a champion candidate.