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.
Leverkusen performed well last season and this season and their manager Xabi Alonso has played a significant role in their good performance. Carlo Ancelotti's contract with Real Madrid has expired this season, as a result of which Real Madrid has given a new responsibility to Xabi Alonso, as a result of which Xabi Alonso has left Leverkusen's responsibility. The one who will take charge of Leverkusen now is certainly not as skilled and experienced as Xabi Alonso, in this case, since the performance of football depends a lot on the manager, we can imagine that Leverkusen's performance in the coming season may be a little worse. However, if every player in the team has a good understanding with the manager and if the manager can apply the right strategy, then the performance may be the same as before. If we watch a few matches at the beginning of the season, we will understand how Leverkusen can actually perform throughout the season.