This is certainly very good news for Juventus. Because before Pogba was hit by this case, he contributed a lot to Juventus' midfield. So with the news that Pogba's sentence has been shortened, surely in the next few months Pogba will be able to return to playing with Juventus. So this will definitely make Juventus' midfield even better. And reportedly Pogba could return to playing again early next year.
I have also stated to think that Juventus will have advantage of having him back so that their midfield can be strong again as it used to be when he is playing there with them before this whole case that led him to the ban, but it seems Juventus don't have any extra plan for him, so he will likely be a free agent during the January transfer window.
Madrid can get him to add squad depth, same as other big teams in the Europe because I think since he will be a free agent, negotiations will be easily made since they only to agree personal terms and salary discussions, and he cannot play for long again due to his age. And if Madrid or any big team didn't sign him, he can move to Saudi Arabia to continue his football carrer.