Assuming he goes... where to?
Madrid doesn't have the money they used to available, with Bernabeu renovation, and if the're looking to bring a galactico, i'm sure Mbappe would be the priority. Plus, Modric renewed for one more year, so the core of Kross, Modric, Casemiro and Valverde will make Pogba not a priority next summer.
Juventus surely would love to bring him back, especially with Pirlo in charge, but i doubt it they'll be willing to pay more than 50m for him. They could wait one more year to bring him as a free agent, something they are used to.
PSG is the real possibility, given they have unlimited money and need a CM. Plus, bringing Pogba and maybe Messi, could persuade Mbappe to stay.
I'm not rulling out a man-u turn here, given that we're now title contenders and Pogba is a starter and more motivated than ever to win here.