This. plus his D coordinator left. Lets be honest, their Offense was never great. They won because of great defense. And now that Harbaugh is there MSU is basically getting no recruits, they are getting Michigan's and Ohio's leftovers/ unwanted guys. Literally their top recruit last year was a WR (Hunter Rison) from Ann Arbor that Michigan had no interest in because Michigan signed 4 WR's that were all ranked higher then him.
That Harbaugh can recruit no doubt. I hear Christian McCaffery's little bro was recruited to be a QB there. So Michigan St only getting sloppy seconds, downgraded to Iowa or Minnesota levels, maybe lower