Yeah is just the centre of the midfield and the centre of defence. And in all fairness, Birchall will make a difference, but we still need the box-to-box midfielder who could distribute the ball and dictate the pace of the game.
The centre of defence could be solved with Julius James, the U-20 boys, Yohance Marshall and I still find Bakr is a good player and allyuh was too hard on him. He could distribute from the back and he very composed and comfortable on the ball, despite his lack of pace.
The wing midfielders and wingbacks we have a whole set of them who could each stake a claim and it won't make much difference. With the lack of a genuine playmaker, Latas doing the right thing and keeping the creativity to the wing and keeping the middle solid (like Beenie did with him and the rest of the world doing with Messi, Ronaldo and Ribery)