I also thought too if arsenal does not win Europa league, Manchester United will win it but this two Premier league teams failed to be consistent in their games. I can see Sevilla have been targeting Europa league championship and they are really working towards it to achieve it.
I also see Sevilla as a candidate who can win the Europa League this season, but actually this cannot be decided unilaterally. Because Juventus and Roma also still have the same chance for that so this is still difficult to predict now. Roma and Juventus will also make improvements to their game in the second leg later because considering the result of the match in the second leg is decisive for them to advance to the Europa League final this season.
The four surviving teams are candidates to win the Europa League Trophy, they still have the same chance before the second leg starts including Leverkusen who lost to Roma in the first leg. Of the four remaining teams, Sevilla is the most surprising team. Their performance in La Liga was not as expected, but in the Europa League they were able to provide competition with a different appearance. The second leg will be played at Sevilla headquarters, the last victory over Valladolid is a good capital to finish the match with a victory.
While Mourinho has prepared his team ahead of the second leg at Leverkusen headquarters, Mourinho has chosen to rest several important players in the last game Roma played in Serie A so they can perform optimally at Leverkusen headquarters. Roma only need a draw to advance to the final. Mourinho experience has been in several important matches while coaching other teams, he prefers to adopt a total defensive strategy to reduce attacks from the opposing team.
In the second leg, Sevilla benefited from playing in front of their supporters, while Roma had a 1-0 victory in the first leg. In general, Sevilla and Roma have the opportunity to qualify for the final round, but Juventus and Leverkusen also don't want their fate to end in the semifinals. The second leg will be more interesting than the first leg because all the teams have the same goal, they will give their best performance to be the best on the Europa League stage this season.