When there's a back three, people automatically call them 3 centre backs and others just associate the qualities of big, strong good in the air claps his hands a lot leader to the name centre back. So now there should be 3 big strong noisy players at the back. It was noticeable that Kompany, who's the closest we have to that type, has been kept out of the middle and played wider and looked a bit uncomfortable tbh. Stones has been showing signs of improvement and I think Walker will prove to be quite a versatile player.