Juventus fans really hope that next season so that Juventus will no longer look bad and unable to compete for the top flight in the League. Even though Motta is a new coach at Juventus, I am sure he will use his experience and knowledge to see what Juventus' current condition is so that he can plan quite the right decisions like the several options you have mentioned. Because recruiting talented young players is an option that almost all teams want to do every season in order to make the team's strength even more formidable.
I myself am not a Juventus fan, but in my opinion Juventus is starting to lose its glory days. It's difficult for them to return to their glory days because they haven't overhauled their players, because with what @Velvet78 has said, Juventus does have quite a lot of players who are getting older, so of course their performance will no longer be as enthusiastic as before. Even though Juventus still has the opportunity to perform better next season, it is very likely that they will experience some difficulties because of their players who in my opinion need to be improved.
Indeed, by recruiting young players of course it takes time to adapt and become the best of the best, of course Motta will do his best with the players he has, Juventus can compete closely next season if they are able to fix their performance problems and other problems.