Blake Sims
Philip Ely
Alec Morris
Cooper Bateman
or Parker McCleod
Either of those guys. My guess is Ely. Coach doesn't typically play a QB that he's not comfortable with managing the offense, no matter how talented. Of that group, in terms of pure QB talent, my personal order would be: Bateman, Morris, Sims, Ely, McCleod. But more than likely, it would be Ely since he's pocket passer that's been in the system the longest. I think what Blake does is great for what we have with a stable full of backs and a great offensive line; that doesn't do our receivers any good.
So while we're not sure if AJ will be gone, we can rest assured that 4 of the 5 offensive line starters will be gone. Thankfully, we'll have an even more embarrassment of riches at the running back position. So we'll probably lean heavily on those RBs to help out our young QB and our young offensive linemen who should be great at run blocking by then (since when they've been in every game this year, all we're doing is running). I guess we go with Ely, although, personally, I'd like to see Bateman.