It's a correct decision not to renew Paratici, as he is at most to blame for how the last couple of seasons panned out. I do thank him for the signings of De Ligt and Chiesa, though.
It's more sad than anything that it didn't work out, because we all know that he has what it takes to be a top DS. I read that he is wanted by both Manchester United and Bayern Münich. What would be typical now is if he goes there and does a superb job for one of them, winning everything. However, at Juve it wasn't to be. He was tasked with putting the finishing touches on a squad spearheaded by the super signing of Cristiano Ronaldo in an effort to make a huge bid for the CL, but he totally bungled it, most notably by neglecting the midfield and fullback areas. And for this he needs to go.