Bundesliga is also a major trophy like the champions league, so even if Xabi Alonso is able to win the Bundesliga again, it is a very great achievement for him again for the second season. The champions league trophy will not be an easy one for Xabi Alonso to win in the next season. You need experience and consistency in this game before you can be champions. Xabi Alonso can try for the first time and he might be lucky or will have to try again and again before he can find the best fit for the club to win the trophy. I just feel he can win the Bundesliga trophy easier than winning the champions league but trying is something he must have to do before he can be sure of his place in that competition.
Honestly it will be erroneous to think xabi will win the champions League but this isn't discrediting the fact that it's very possible he does. Unlike every other leagues, champions league is highly competitive due to the kind of attention it has gotten, it has gotten a different level of players a d teams competing at that level and to make things a bit tough, it's a new format been introduced which is like what applies in the domestic league, one which can be considered stretching since it's going to be the first time of trying it out. If it were to be the old format, the chances could be higher than with this as a whole lot of experience is needed to scale through this of which Leverkusen generally lacks, they aren't frequent champions league competitors but then I'm believing they will get a good experience from this and hopefully they get a decent finish too aswell. The bundesliga isn't a small trophy either so if they are able to win that, I think they have gotten a whole lot too for the season.