Seven former players asked Monday to intervene in the court case in Philadelphia.
They say the plan doesn’t offer anything to men who can still work, but suffer from headaches, personality changes, and other side effects.
The group includes 2008 Pro Bowl player Sean Morey, now a sprint football coach at Princeton University.
The proposed $765 million agreement would give millions to men with Parkinson’s Disease and other serious neurological problems.
Senior U.S. District Judge Anita Brody fears the settlement is too small, but lawyers for both the NFL and the lead players’ group hope to convince her otherwise.