Most of the roster that is left are players who, if they decided to leave ISU, thier careers would be done, or they would have to sit out a year to play their final year. Those include JVB, Dendy, Boozer, DG, and Scotty C.
After that, you have Dorr, Palo, and Oliver. Palo and Oliver red-shirted last year, so I would doubt they would really want to sit out another year and lose a year of eligibility when neither of them are proven yet.
I'm pretty certain we are done with the "transfer" talk at this point in time. However, we can still have players just decide that they are done with their basketball careers, but outside of Dendy, I would be surprised to see them want that.