PHILADELPHIA (AP) -- The NFL has agreed to remove a cap on concussion-related damages after a judge questioned whether a proposed settlement provided enough money to cover retired players. A revised settlement agreement filed Wednesday also eliminates a provision that barred anyone who gets concussion damages from the NFL from suing the NCAA or other amateur football leagues. U.S. District Judge Anita Brody had denied preliminary approval of the deal in January that set a $675 million cap on damages, because she worried the money could run out sooner than expected. The settlement is designed to last at least 65 years and cover retirees who develop Lou Gehrig's disease and other neurological problems. More than 4,500 former players have filed suit, some accusing the league of fraud for its handling of concussions.