The interesting question is who will Norv be the offensive coordinator for next year. There is virtually no chance he comes back to SD IMO. I'd say he works for a team with a defensive head coach who lost his offensive coordinator (hired as a head coach).
Looking around the league, how about Norv the broncos new offensive coordinator next year? He would be in demand and the top o-coordinators like to pick teams with an elite QB. NE may loose McDaniels but I don't see Norv fitting into the patriots way thing, they seem to like to hire guys groomed by Belichick.