Not just coming back to college. He could have gone to Boston College or Washington State, and we would have never seen nor heard of him again. No one would care and ISU would be totally unaffected.
But when he plants his butt in Lincoln, 50 miles from the Iowa border, he obviously has no intent of avoiding ISU in recruiting, and actually he has directly and intentionally placed himself in position to battle with ISU for recruits, taking advantage of all the relationships he, Doc and Matt established when he was at ISU.