FWIW, as over-rated as possession numbers can be, and say what you want about Davis, our possession falls apart without him. And since we have no attacking punch, possession matters to us. Yearwood should fix that once he gets acclimated, but Casseres is not a strong possession guy. I haven't looked at his passing numbers, but I doubt they are good.
Even without being acclimated Yearwood and Valot covered the position as good as Davis did if not better. Having 5 defenders and 2 strikers, not letting a guy say like Mines create and instead having Nealis defend I suspect is what's causing lack of possession in midfield rather than replacing Davis with equal or superior player in Yearwood.