In the Europa League, Arsenal really had bad luck because they had to lose to Sporting. Previously Arsenal were one of the favorites for the title, but after their failure to reach the quarter-finals then Manchester United and Sevilla are the favorite teams in my opinion. But unfortunately the two had to meet in the quarter-finals.
I'll forget Arsenal's failure because they underestimate other teams, but they were completely wrong about Sporting. Apart from Sevilla and Manchester United, I think Juventus and Roma are the other favourites. But Sevilla is the team with the most Europa League titles to date with 6 titles, the last being 2006.
No doubt with Sevilla experienced become the team most winning UEFA Europe League tittle, but looking their performance in domestic league seems impossible have chance for winning with Europe League again. I think between Manchester United and Juventus have chance winning Europe League depend both team will success lead until final stage or not.
Juventus have important mission in Europe League become alternative way how to get Champion League ticket automatically for next season, after 15 points deduction in domestic league they little chance for finish on top fourth standing, due UEFA regulation give champion league ticket for the winner Europe League make Juventus have motivation for winning this tittle.