Don't agree on the Napoli part. You name 3 attackers (and Hamsik) then say its impossible to defend with those players. Their defence has always been really weak except for Koulibaly. In my opinion he got the most out of Napoli, you can see Ancelotti's team nowadays still profiting from the gameplay implemented by Sarri. Napoli is mediocre.
i mean it would be completely stupid to play defensive football with those players. sarri adapted to the squad at his disposal during his 3 latest spells, that's the way i see him. also, he was pretty lucky with the timing napoli hired him: they had a very strong squad build for attacking footie that played together for a relatively long time. also, he spent 3 seasons at napoli, and were outscored by both lazio (!!!) and juve in '18, and by roma in '16. his best season came when he could finally fix the defense in his 3rd season.
and of course he didn't get out the most of napoli: they didn't win a single cup, they were 3rd behind an inferior roma team in '17, they lost or drew to countless inferior teams in europe, and above all, they lost to fiorentina 3-0 when it mattered the most. his best achievement was replacing the injured milik with mertens and not losing anything in attack, kudos for that, otherwise, they still choked a lot. it's buried deep in the napoli football dna i guess, so it's not all on sarri obviously.
anyway, sarri is a good coach, like most of these guys we're linked with, but 1. he's not a winner at all 2. he's not the attacking minded, all flair and fancy type of coach some posters here like him to describe, he's not an italian heynckes in any way 3. his southern, bigot, classless personality doesn't match juve at all.
- - - Updated - - -
I get that there might be some truth in the Dybala part but why would have Pjanic left? He has been one of Allegri's favorite players here.
pjanic is probably tempted by offers from real madrid or psg. he's 29, this might be his last chance to have an elite contract at a top team, and he might just need some new motivation, too.
personally i'd keep him, he's one of my favorite players from the current squad, but both juve and pjanic might have legit reasons to move on from this relationship.