I watched Derek all season long (I am a Dukie). His game is very similar to Timelord's. He even attempted some 3 pointers, more so earlier in the season (he needs to continue to work on that shot).
I think he will be a good NBA center, once he makes the adjustment. I would LOVE to see him play for the C's. TANK's mock draft has him going to GSW at the 20th overall pick - not sure how Brad would pull this off, but I would love to see it happen!