Absolutely no one is locked in. Sitake was the guy Kraft has been working on for two months. Kraft thought it was getting done then it wansn't then it was again then it wasn't then Kraft upped the offer now we wait. IMO there is no one else waiting in the wings except Terry Smith. It's do or die time for Kraft. Kraft missed the perfect time to announce Smith no it's a boondoggle for Kraft if he does.
Sitake has told Kraft thanks, but no thanks because BYU has given him a pay raise and locked him (Krafty has been a true boon fo P4 coaching community.... not so much for his professional obligations - PSU's Program).