Juventus is not in good performance in Italian league, but in Europa league Juventus is focusing in Europa league, Juventus had serious challenge in their performance in Italian League in the early time of the season. Juventus are currently in their best form and this could be a hindrance for the Mendilibar squad if they don't implement a good strategy to be able to bring Juventus home. Juventus have two targets this season, namely winning the Europa league and securing a Champions League slot next season.
I think Sevilla are a good match for Juventus, If Manchester United had beaten Sevilla they wouldn't pose much of a threat to Juventus as much as Sevilla would and since they have a good record competing in this competition they will have some advantage, they have done it in the past we shall see if they can do again this time.
Slowly but surely Sevilla has shown its quality in the Europa League, beating Manchester United was a big surprise that Sevilla gave to football fans. Sevilla has managed to improve its performance after experiencing difficult times at the start of the season. The quality that Sevilla has now will become a threat to Juventus.
After the opportunity to qualify for European competition in La Liga, Sevilla will try to maintain the form like when they beat Manchester United. Juventus must be careful with Sevilla because they always perform well in the Europa League, especially since Sevilla is looking for an automatic ticket to the Europa League next season.