By the time the former Patriots coach stands on the Tar Heels sideline, he will be 55 years older than some of his players. Why would the six-time Super Bowl champion who is 14 wins from the all-time NFL wins record take over a middle-of-the-road ACC program during college football’s most chaotic era? “This is a big f--- you to the NFL,” a confidant told ESPN. Read more on a stunning move that few saw coming — and why the league in which he spent half a century coaching didn’t want him around.