With Jefferson supposedly being criticized by Oklahoma coaches, correctly evaluating whether he is a lazy player or not as alleged will be critical. But if he falls down draft boards he could present us even greater value if we get him lower than expected.
I think that he presents similar value and less risk than the linebacker/DE out of Oklahoma last year that went in the second round to the Lions or Ravens IIRC. It is obvious that OU coaches would know more about this guy than anyone else with respect to his workout habits and practice habits. I would think that Jerrry Jones' relationship with Bob Stoops would come in very handy on getting an honest evaluation of Jefferson.