Juventus is at the 4th position not 5th and will be liable to go to champions league next season if the league ends as it is now. Look at the screenshot below to see Juventus position
Besides, Juventus has the same 66 points with Napoli and who knows if the struggle to win all the remaining 5 matches, the season had not ended and it's not good to finalize the outcome on Juventus, I'm not a Juventus fan though but I'm saying what football can turn out to be unexpectedly.
The table above clearly shows that Only Inter Milan has qualified for champions league football in the serie; with one out of Atalanta, AC Milan, Napoli and Juventus missing out on a champions league spot; who do you think is most likely to miss out ? I am tipping Inter Milan, Juventus, Atalanta and Napoi, what about you