game and what they signed two years ago isn't binding. Even in the days of strict transfer rules, that was the case that returned missionaries were fair game.
Like last year, I don't think Wahlin needed a release when he came back from his mission and signed with U of U instead of BYU (even though he had signed with BYU out of high school in 2021).
But there could be situations like what happened to Caleb Lohner where Lohner signed with U of U out of high school and then before enrolling had a change of heart, and U of U didn't contest and let him out of his signed commitment so that he didn't have to sit out a year for transferring to BYU to play that very season.