As for the chances of winning the Europa League, Liverpool are still the strongest while for Leverkusen it depends on how they continue their trend whether it is only limited to this or even better in the Europa League.
Leverkusen were not very good in their last two games in the competition, it almost seemed like luck.
If Leverkusen can win the Europa just as they are going to win the Bundesliga ahead of Bayern Munich this time, it will be a very big achievement for the coach, and will increase his value to any team that may want to sign him. For a player like Granit Xhaka who just moved to Leverkusen from Arsenal, that will also be a good win for him.