The problem is McKennie is doing the opposite
Mckennie is the antithesis of a holding mid. He can never play as 2 man holding mid role. Static role exposes his lack of passing and technique.
He should only play in 3 man midfield with freedom to use his athleticism and off the ball movement. Same with how he fits more all action role wide or as an extra AM into the box.
Every coach that tried him in deeper CM role realized quick it doesn't work.
With thurams injury, Tudor must feel he has no other option. But still, he should know too its far from how to use Mckennie.
Which means a CM signing in January is super urgent.
Or promote someone from U23.
Both options unlikely.