No , I do wonder what coach will Bayern and Liverpool try to hire in the summer window because it's clearly that Xavi Alonso wants to stay another year with Leverkusen in order to play with them in UCL and I think this is the best decision for him because he can witness what this team can currently achieve in UCL. Until then , he still needs to secure Bundesliga trophy.
That’s the best option for Alonso in my opinion. He should stay to prove to the world that he is a good coach if he play in the Champions League to compete with world class coaches; if he leaves Leverkusen after this season, he will not be able to enjoy all he has done for the club which including winning the Bundesliga title maybe this season and maybe the Europa League.
Bayern Munich should go and hire another manager outside the Bundesliga, they should leave Alonso to add more season to try winning the Bundesliga again after this season before deciding on where to join since Liverpool also gave up on him to replace Klopp for how, but maybe he might decide to join them letter in the future.