Never like full backs going into midfield. Just dont think they have the awareness to play there. They have spent ages playing with danger on one side, in CM it is a 360 degree view you need, eyes in the back of yout head if you like. Then the best CM/CDM have the best touch on the pitch usually, playing on the half-turn. I just dont think it is reasonable to expect players not brought up in that central spot, to make the switch. Look at Trent, looks like a lost boy in there. For me I would like to see Hume convert to a CB, I think he is tailor made to become a really good one.