Their main task is to maintain the performance they have shown this season. If they succeed in maintaining their performance, then I am sure they will be able to talk a lot in the Champions League next season. I think they can do that, especially since they have retained many of the players who are in the squad this season.
Even though it is difficult to maintain the same performance as this season, I think Xabi Alonso will do it again next season because they will compete more fiercely in the title race and I think Bayern Munich will improve their performance to match Leverkusen's consistency this season.
Xabi Alonso has retained most of his important players so Xabi Alonso can still utilize these players to continue to perform optimally next season in any competition and Xabi Alonso will add the players needed to further support their performance. I can't wait to see how Leverkusen will perform in the League Champions next season.
In terms of player abilities, I feel that Xabi can also know his players' abilities well, so that will help him to be able to apply the right strategy so that the players he has can show their best abilities in the game. This is important because when a coach knows the abilities of his players, the coach will know what he has to do when facing a particular opponent. Because in the Champions League, their opponents will not be easy.
When a club can perform well in that season, it can be ensured that the coach understands the characteristics of each player so that the strategy implemented by the coach is always suitable for the players to use, so if Leverkusen still has the same players and the same coach, it is clear that the coach still really understands the players' abilities and will continue to hone the players' abilities so that they continue to appear competitive, unless the club experiences injury problems then the coach will have difficulty implementing strategies with different players, so whatever happens Xabi Alonso must understand the abilities of all his players, even the new players he recruits and his mainstay players so that if one of the mainstay players is injured, Xabi Alonso can cover the gap.