If this does happen I would be interested to see how Pep uses him. I can only see him in a double pivot. Rodri covers for the area he lacks in, build up play, and Rice is free to break the lines with his dribbling and snuff out chances with his elite ball winning.
But if he is replacing Stones in the XI that means you lose out on having a natural CB to drop into the 3 to make it a 4 when you don’t have possession. Rice is good enough defensively to do that job but would think that Stones is better suited for that.
Having those two to rotate in that role is just