A federal judge in Philadelphia has preliminarily rejected a $767 million settlement of NFL concussion claims, fearing the sum may not be enough.

U.S. District Judge Anita Brody has asked for more financial details from all parties. In her ruling the judge says the settlement is designed to cover nearly 20,000 men for 65 years.

The awards would vary based on an ex-player's age and diagnosis. A younger retiree with Lou Gehrig's disease would get $5 million, those with serious dementia cases would get $3 million and an 80-year-old with early dementia would get $25,000. Retirees without symptoms would get baseline screening, and follow-up care if needed.

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