He is supported by 3 cbs in behind him. Some who move into midfield alongside him when needed. Especially whe Bruno joins the forward press. Plus has 2 of Mbuemo, Cunha/Mount delaying opponents ahead of him and two wingbacks who alternate coming infield of the ball when the side executes the system properly . Resultantly he has had less space to cover this seaaon and has looked 3 times the player he looked at the tail end of ETH's reign and the first half of last season. How do you think Bruno and Casemiro dominated Arsenal s midfield for 90 minutes?
If we tried that pair with just 2 cbs and advancing fullbacks behind them, Casemiro would be all on his lonesome in acres of space and we'd be killed by every side in the league.