I also have same feeling about Juventus because recently they are having not good performance in Serie A and Sevilla is surely not easy opponent in UEFA Europa Cup specially after beating Manchester United badly at home things looking favourable for them history is now also favouring them for having spot in final but still we can expect any result because Juventus is trying to rebuild themselves which can create problems for the Sevilla.
Even mostly are feeling we will have final between Sevilla vs Roma but as we have all teams here we also can go with Juventus vs Leverkusen because Leverkusen performance is impressive and their win against Bayern Munich surely give them good confidence for the win here and go through for the Champions League as well Alonso is surely showing great character as coach his hard work can give them good results.
Sevilla has been on a winning streak since they eliminated Manchester United in the Quarter Final, I'm curious to see how they'll perform against Juventus in the Semi Final, especially considering Juventus' recent losses in various leagues. It seems like Juventus may have been lucky to even make it to the Semi Final, they nearly lost to Sporting CP, if not for that slip up, they might have been eliminated from the Europa League since.
Bayern Leverkusen and Roma are two teams that have come a long journey and it is sad that they are meeting in the Semi Final, one of them will go home surely and the team I have in mind is Leverkusen, Roma have high chance of going to final than Bayern Leverkusen, but I'm not sure about Sevilla and Roma that will win this League.