From what I've heard discussed, transfers must still be in good academic standing (imagine that, in today's "pay for play" world). The issue is that the semester doesn't end at UCLA until sometime in June, so unless they (UCLA) allow him to take online classes from Knoxville it would be difficult to get him here this month to start working on learning the offense. UT is holding out hope that because he was also still working on finishing his degree at Appy State via online classes while he's been enrolled at UCLA, then that would count towards his standing when he finishes (maybe this week?) and allow him to be on campus sooner.
I don't know that I've heard if that is going to be acceptable, but that's the gist of the issue, as I recall hearing it being discussed on Sportsline here in the Tri-Cities.
I don't think we have to worry about his "smarts".