if Sevilla plays like last season, of course, Sevilla's chances of winning against United will be even greater. but the current situation is different, Sevilla lost quite a lot of support in this match. United with his current appearance is indeed a favorite.
I didn't expect that there would be many surprises in this fight. a lot of people will bet on United. In terms of quality, Ten Hag should be able to bring United to victory.
Although Sevilla has not been very good this season in La Liga, failed in the Champions League, but I think they also have hope to reach a higher level. Manchester United are a good team but they are very likely to be beaten despite being the favorite of many. Sevilla are good in some ways, they are a good team but of course they have to try their best to find a good form in this match.
Manchester United also need to play perfectly to win against Sevilla, but when they underestimate Sevilla for whatever reason, then they must be prepared to fail. There is a possibility of surprises in the quarter-finals in my opinion, especially Sevilla vs Manchester United.
I don't know why you think Sevilla have any chance against Manchester United. I don't think they can win. Maybe the home game will be a draw, because Sevilla's home stats are good. But they will definitely lose in Manchester and probably by a big score. I am waiting for Manchester United in the next round. They are much stronger and Sevilla are a weak opponent for them.