Leverkusen will like face a difficult time come next season because they are in a different phase of their club because a new coach will be coming to the team which means that a different style of play which the players will follow and the truth is that it's not easy for players to follow and master the playing pattern of new coaches because it will take a while before the players will adopt to the style of play of the new coach.
While a lot of people sees that Bayern Leverkusen will be more than this season on the next one but they have not considered what the new coach might be giving to them as he is starting the season, so they shouldn't get too confident on the new coach yet, let it not be that they will be hoping for something and getting another, that's how some clubs out of previous poor state get so happy for the new coach they're about to have but seeing worst results from him later on, if hype was a trophy Manchester United could have gotten it from all the hype they got while there current coach was on the process of joining them but unfortunately it has been the same as always.