PHILADELPHIA (AP) — More concerns are being raised about the proposed settlement of thousands of NFL concussion lawsuits.

Yet only a fraction of the nearly 20,000 ex-players are expected to opt out of the class-action settlement by Tuesday’s deadline. They would be left to sue the NFL individually over claims the league hid known concussion risks for many years.

Critics can instead raise objections at a Nov. 19 court hearing in Philadelphia.

The settlement would pay millions to young ex-players battling neurological disease, and an average $190,000 to older men with Alzheimer’s disease or dementia.

But ex-players exhibiting rage, depression or mood disorders would get nothing. Some brain researchers link those problems to multiple concussions.

The advocacy group Public Citizen weighed in Tuesday. Their lawyers say the deal leaves too many former players on the sidelines.