I also have no doubts about the ability of Xabi Alonso especially for this season again because from what he has shown last season at Bayer Leverkusen to be able to win the Bundesliga is something extraordinary so that it has been a good achievement for him and hopefully can be achieved again this season. However, I do not think that Bayer Leverkusen can easily face the obstacles in the UCL, because it is a competition with quite high tension and very different from any competition including the Bundesliga.
I'm very concerned about Bayer Leverkusen and whether they will be able to repeat their success from last season. Bayer Leverkusen will face different challenges than they did last season because every club has gathered more players to win the league title. Bayer Leverkusen still has the same attacking players that they used last season, and Xabi Alonso only bought defenders and midfielders, not attackers. So, compared to the players Bayern Munich signed during the transfer window, do you think Bayer Leverkusen will repeat what they did last season? No need to compare it to the Champions League, the Bundesliga will be very different this season, and I'd be surprised if Xabi Alonso gets the same results as last season.