10th assistant has been hired. Bill Busch was most recently the co-DC and DB coach at Rutgers. He will coach safeties at LSU. He's worked with both Corey Raymond (at Utah State) and Dave Aranda (at Utah State, then Wisconsin) prior to working at tOSU then Rutgers. He also coached under Urban Meyer at Utah and tOSU. It sounds like Raymond will still run the DBs, though. I don't think Busch will report to Raymond, but just focus more on safeties. This looks, sounds and feels like an Aranda hire.
This isn't being mentioned, but should Raymond move on to a DC job as he has always wanted to do, this would be a great way to bridge the transition.