Michael Joiner and Monte Cummings are good players, but not necessarily great ones. Nonetheless, they gave Duke fits. Next year's class is big men and guards and a redshirt swing player.
Someone will have to be able to attack, both on defense and offense, against guys like Cummings and Josh Howard. For this year and next, that will be Dahntay Jones and possibly Reggie Love. But that's it. So for Deng or Ebi or whoever, there's a wide open spot, and as close as one can get to guaranteed minutes.