There are many teams with great potential in the Europa League next season, and they'll certainly be giving their all to progress from one round to the next. I won't pick a favorite now, but I'll wait and see once the season starts.
It is even too early to pick a favorite team that will win the Europa League next season, and one thinks about the Europa League even while the season is ongoing. It is always difficult to decide which team will be the winner of the league; the winner always comes as a surprise, a team you never expected to win the league.
If we are talking about favorite teams to win the league, there are a lot of favorites, and these teams are all very good in performance. That's to say the league will be so interesting because these teams will be putting in their best to achieve the best results to make it to the final.
The reason why you can't really tell who will be the favorite to win the Europa League next season is that all of these top teams will definitely have different targets. For some, the Europa League might be the target, while for others, the home league might be the target, which can affect the team's consistency in performance in the Europa League.