I think the biggest thing is even if FDJ isn't that smooth with the ball his defensive work, stamina and energy is much more important to shield the defense
Yes, in another system with no single pivot that could work.
In a 4-3-3 with a single pivot, where the pivot is delegated with the task of progressive play quickly and accurately from deep, Frenkie can't play there
He can't play there also because he leaves his position and roams as Ten Haag said, so his defensive work will go in vain
We don't have a replacement for Busi. That's the hard truth some here do not want to see