I don't know about spine but I think that in the coming years our two center-halves must be Luiz and Iva. In the middle Mata is a must along with rambo (our new essien in a way?). Problem still is upfront, Torres, despite his few good performances, still hasn't proved he fits with the team (I'm not doubting his talent) and Danial is way too inconsistent for us to make him the center of our attack just yet.