Michigan football's six biggest transfer portal needs this December

The NCAA transfer portal is set to open for all college football players, and Michigan Wolverines football is expected to be very active in bringing in talent. According to On3's Pete Nakos, in fact, the Maize and Blue are expected to be one of the most "aggressive spenders" among top college football teams. With the caveat that things can change as Michigan's roster rapidly evolves, here are the six positions of need for the Wolverines this December.