Juventus are a quality team, but they shouldn't underestimate Sevilla. I don't think it's a worry to say Sevilla is the team that will go through to the final after they managed to prove their quality against Manchester United. Sevilla performed so well and dominated, so Juventus should be able to realize how good Sevilla is.
So far Sevilla have also managed to rank 12th in the La Liga standings since they improved their form. Sevilla won their last 3/5 matches while they only had 1 loss and 1 draw. Juventus actually suffered 3 consecutive defeats in Serie A in their last 3 matches.
Juventus lately in Serie A their performance has been relatively unstable, therefore I think they will have difficulties when they face Sevilla. Sevilla was surprisingly able to beat Manchester United in the previous round which made them even more confident when they faced Juventus.
Juventus have experienced a decline in performance this season which makes me a little doubtful of their performance against Sevilla. This season Europa League will be more interesting after several big teams fell in the previous round which strengthens the overall is that there are no weak teams competing in the Europa League.