I feel Juventus needs at least two more transfer windows to rebuild themselves, but for current season their objective should only be a top 4 finish. Also Juventus has shown mixed form this season, hence it’s difficult to say whether yesterday's draw could have been converted into a victory or a defeat had Napoli been at full strength.
Juventus need to rebuild their defense system as soon as possible because Chiellini has his very last seasons in his career and soon Bonucci will reach his career downside. They prepared for it a few seasons ago with De Ligt from Ajax but they will need more young defenders because now not only to replace Barzagli but now they will have to replace Chiellini and soon Bonucci.
I see Juventus get problem on defender area and they need to get transfer for this position, right now have over for Leonardo Bonucci and Giorgio Chiellini and need new defender position to replace them. How ever almost all match on Serie A Juventus never make clean sheet and last match they have get draw 1-1 by Napoli, if they want get four position standing at least league they need active on transfer window before it close and not any player success get it.
Their defense system will be in more troubles after each season when Chiellini and Bonucci get older. Their attacking system has problems too because they don't have good strikers after Ronaldo left Turin.
Chiesa, Dybala are good as swing back or forward, not as strikers. Vlahovic from Fiorentina can be a good choice for Juventus. He is young and is considered as another version of Ibra.