Nastasic is only nineteen and still has growing and filling out to do. In my opinon, he has amazing potential as weel as being a great player now. CBs do not reachtheir peak until their late twenties/early thirties and Nastasic could be great servant of our club for the next fifteen years. When the Kolo brothers are away at the African cup, I would like to ee VK and Jl played as our CBs and Nastasic in midfield just in front of them - an experiment worth trying.