Sevilla are my favourite for the Europa League title as well. I think like this even in a season that Sevilla have had big difficulties in general. Because their recent performance has started to get more interesting. There is some good level of improvement as it can be clearly seen from their recent results. They don't lose games easily most of the time from now on.
I remember how good they played against Manchester United in the second leg as well. This must be a warning for Juventus to defend them well in their matchup. Juventus need to be more capable of scoring multiple goals in a game as well. If they perform similar to the one against Sporting then their job will be really difficult.
I can't be sure about the end but I don't think if can Sevilla be the first hope for the Europa League this season, because Sevilla had bad results during this season and the only reason for them to win the game against Macnshter United was just the personal mistakes of some players and especially the defenders, otherwise Manchester United had a much better situation for that game, also since Juventus is not in a good situation since a few weeks ago and they got bad results even in Serie A Sevilla can have to win this game, especially in the first leg.