I agree Fabian would shine even more under Sarri. His passing skills with all the movement would be a highlight reel every game. He also would be attacking the box more. Instead we'll get to see him sold to Real and become a star.
And to think he was basically tossed away at ManU for a loan. Now he's one of the best defenders in Serie A. Good luck buying him on the cheap. They will want more than 13mil.