Agree at least 1 CB and possible a CM are required, however, for me the big concern is the left side of the attack, regardless of the formation.
Whilst Eze was not a natural fit there he did suit OG's formation and proved very effective.
Pino was never a natural replacement and whilst i hope he will be better this year as he adapts to the English game he is so right footed i'm not sure he can play left in a 433, and he wasn't great in a 3421.
Even if Pino proves me wrong he clearly needs competition. Johnson has shown he is too limited so i'm struggling to think of alternatives.
Was hoping Esse might step up, but not sure he will and i think he's more right sided anyway