Hmmm - interesting idea Brin but Grealish in the centre area? He's great at getting the ball and moving it quickly forward and causing panic for the opposition, but can he exist in harmony with Bellingham? I would have thought that if you play him off the wing it would be as a No 10? But can't see anyone taking that from Bellingham for a decade or so (fingers crossed). Might be a danger of crowbarring as per Gerrard and Lampard? Another I'd like to see in that role is Maddison, who is fantastic as No 10 for Spurs. But can't see him in the Phillips role either.
Nice quandries to have!