If Shooter is right (never a given), then it appears as if he is getting a medical redshirt from his freshman year. He played in just a handful of games because of injury.
While getting a sixth year of eligibility (in Busch's case it would go like this: Cal Poly, sit out, Gophers, Gophers, CSU, CSU) used to be close to impossible, it is becoming easier and easier.
There will be times in the next couple of years when Busch's grit will be missed by the Gophers. Without question. I do think that a risk has been taken by cutting ties with a kid who (as long as he stays healthy) plays hard, goes to class and is something of a leader. If all these recruits work out great, that's great. If one of these guys leaves the program or something (hypothetically), then cutting Busch loose may be regretted.