Right now Nix is a backup NFL QB (rounds 4-7). He needs more development at the position. Will he get it at AU? Depends on who they bring in as the OC. If he goes anywhere else, what are his chances at earning the starting job? IMO, his best option is to stay at AU.
Depending on what is out at USC....Riley has proven he could do it, if he would have Nix. Same could be said for Kiffen at the Sip, providing Corrall moves on to the NFL. If I'm in Hayseed's position and either of those options are available to me, I take them. Worked out pretty well for Jalen Hurts.