If Tudor plays very well, I think there is a possibility that Capello might play 3-4-1-2 formation, and play him as an organizer. Even if our right hand side might be a bit suspect, I guess we can get away we with in certain games.
However, Tudor will be likely rotation player, and if he can stay injury free there is no doubt he can productive. And given Thuram and Canna's age, we do need extra cover to give that extra insurance and keep them fresh.