Matt Cassel re-ups with the Vikings for two more years

With Chad Henne breaking the seal on the backup-quarterbacks-for-teams-that-need-starters market today, it’s fair game for the rest of them. Thus, the Vikings have held onto Matt Cassel, as Ian Rapoport of the NFL Network reports Cassel has agreed to a new two-year deal. The process was doubtless helped along by new coach Mike Zimmer’s realization…