It is very difficult to maintain the success that has been achieved, every time a new season rolls around there will always be an increase in competition and different performances displayed. However, I still believe Leverkusen will be the toughest competitor for Bayern Munich and Dortmund next season because they still maintain the squad that has won trophies this season and will likely bring in new players to add to the team's strength. Xabi Alonso responsibilities will be even heavier next season because Leverkusen will play in the Champions League, the level of competition which is more competitive than the Europa League means that Leverkusen must perform optimally if they want to survive longer in this most prestigious competition.
It is indeed quite difficult to maintain the same success in different seasons because every club will definitely make player changes, change strategies because they change coaches so that the competition will be even fiercer, Leverkusen still believes in Xabi Alonso's abilities while other rivals such as Bayern Munich Dortmund change coaches and we don't know. how the performance of these two clubs next season will be better or worse but what is clear for Leverkusen I believe this club will still perform well under the leadership of Xabi Alonso. This coach is still staying at the club which means he still wants to compete in the title race.
Xabi Alonso has a tougher challenge for next season because he has brought Leverkusen to the Champions League level, although this will not dampen Xabi Alonso's mentality in providing competitive competition, but it is not an easy task for Xabi Alonso because the Champions League is filled with top clubs from another league so Xabi Alonso needs to work very hard because this is his first experience as a coach for the biggest competition in Europe and he will try hard to improve the performance of his players so that they are not easily beaten.