If I were Coach K, I would seriously consider retiring given the current state of college basketball. The changes that have occurred over the past decade has been incredible . . . and not in a good sense.
CBB today has all the mercantile feel of pro leagues in every sense with players jumping around, committing, decommitting, except for the lack of payment for the players. Oh for sure money is changing hands for the top tier kids, it just occurs under the table. It is unconscionable that the leagues, the schools, the coaches are making gazillions, and the kids get essentially squat. Until CBB has a coherent policy on splitting the huge pie of TV money with players, and firming up a transfer portal/protocol that doesn't wreak havoc every year . . . maybe offering higher pay as you go from frosh to soph to junior etc, AND offer a bonus if you stay with the same program . . . stability will probably not return to the game.
The whole system as it is now stands is just perverse.