I've been working many of my non-GT sources on this once since MBob isn't talking to anyone about the search and the name I keep here is Tony Castricone who is Clemson's hoops announcer and he was the runner-up to Brandon Gaudin when he got the GT job.
That is the main guy I'm hearing and really only serious name that's come up on my end. Don Munson the Clemson play-by-play guy is only in his 50s so he has a while before he would retire and Castricone has no ties to Clemson, he is an Ohio grad and has also been the sub-hoops guy for Michigan basketball.