In my opinion, it is because Xabi Alonso is very suitable for Leverkusen, such as the chemistry between Xabi Alonso and Leverkusen as well as all the players who can adapt easily, so they can often perform their best in every match. I'm not a Leverkusen fan, but I salute Leverkusen who have performed very well this season.
The key to becoming a great team is adaptation and a good relationship between the coach and the players, I think we all know that xabi alonso doesn't have a popular player at Leverkusen, but he can make this team a great team even though they haven't been beaten for almost a season Also in UEL, I think Xabi Alonso should be said to be the best coach this season because he managed to make Leverkusen become champions in the Bundesliga or even in UEL and the DFB cup, he has made new history for Leverkusen.
I think it would be a shame if he left Leverkusen because he has to keep himself there for next season where Leverkusen will play in the UCL which is a more difficult level than in the UEL, Xabi Alonso can test his team's ability to play at a higher level this season. If he succeeds again next season, whether in the domestic league or UCL, of course his efforts will not be in vain as a coach at Leverkusen, I'm sure he will be a coach that many other big European teams look up to, Xabi Alonso is probably currently in the spotlight all European clubs and other big clubs, but it seems he is staying at Leverkusen and I want to see how he can take Leverkusen in the UCL to an important round or win the Bundesliga again next season.