The lawyer who initially represented two-time Super Bowl champion Jim McMahon is seeking to obtain a third of the $4.6 million that Anapol Weiss received for its work shepherding the NFL concussion class action settlement.

Minnesota attorney John Lorentz, who referred McMahon and two other retired players to Anapol Weiss in 2011, recently took his fight to the U.S. Court of Appeals for the Third Circuit.