He is healthy, taking reps with the squad all week.
His experience brought the Utes to the top of the Pack 12 for some time and by not bringing him in is a spit in his face for not having a chance to turn the game around in his last season.
Wilson has time to learn, but the Big 12 loss to an unrated team with repeated red zone failures is a horrible reflection. Rising entering the game would have changed the chemistry and momentum in favor of the Utes.