Xabi Alonso have done impressively well for Bayern Leverkusen so far and I must say that he has been a good manager and should he continue in this awesome performance for Bayern Leverkusen he will really be attracted by bigger clubs to sign him as their manager, he has done a great job for Bayern Leverkusen and I believe they may really be up to something this season.
You're right. Xabi Alonso have done a great job in Leverkusen. He really improved Leverkusen to be a strong team in Germany League. They even become the candidate of the champion this season, they are leading Bundesliga table so far. They are unbeatable until now, this simply shows us that they are in the best condition under Xabi's management. Sure, this makes many top teams interested to hire Xabi Alonso. I ever heard the rumor that Real Madrid may consider to hire him as the successor of Ancelotti. But I think Xabi will prefer to stay in Leverkusen for few years. He needs to prove to all people that they can succeed with Leverkusen.
This team has improved a lot. Honestly, the improvement has been really good but I will say at this moment Bayern Munich are actually starting to respect them. There is a big chance that Bayer Leverkusen actually continues to improve, they are going to win the Bundesliga title. Don't forget that Harry Kane just came into the team, thinking that he will win the Bundesliga title without any problem. And he had to face this Bayer Leverkusen team this season. Imagine what will happen if Bayern Munich does not end up winning any trophy.
Regards
Duke