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 Juventus are still safe in the Champions League zone next season if they are able to improve their form in the next match.
Of course it is highly unlikely to see them sustaining this kind of poor form after 3 consecutive defeats, so a win can be expected in their next game against Bologna.
In the Europa League, I hope Sevilla is still the best. But both teams have opportunities they have to fight for. Sevilla is good, Juventus is also good. But Sevilla has good potential to qualify for the final instead of Juventus in my opinion.