Seven retired NFL players filed a federal court motion Monday to challenge the $765 million NFL concussion settlement reached last year.

In the 29-page motion filed in U.S. District Court in Philadelphia, the septet argue that the deal struck between the league and thousands of former players who sued the NFL falls short of covering the most serious cases of disease related to head trauma.

ESPN.com reported that the seven retired players say they are suffering early symptoms of brain disease and that the settlement as constructed would neither compensate them nor other players who suffer the most serious cases of brain-related diseases.

The players filing in court Monday include Alan Faneca, an offense lineman for the Pittsburgh Steelers who was selected to nine Pro Bowls; Rock Cartwright, a fullback and kick returner who played 10 seasons with the Washington Redskins and the Los Angeles Raiders; Sean Morey, a special teams player who played nine season for four teams; Ben Hamilton, an offensive lineman for the Denver Broncos and the Seattle Seahawks; Robert Royal, a tight end who played nine seasons with three teams; Jeff Rohrer, a linebacker who played seven seasons with the Dallas Cowboys; and Sean Considine, a safety who played eight seasons with four teams.

Their claim requests that the judge overseeing the case allow them to intervene in the case to represent players they believe were ignored.

"The settlement provided no monetary recovery -- nothing at all -- for class members suffering from many of the residual effects most commonly linked to recurrent and repetitive mild traumatic brain injury, while releasing every claim these class members may have against the NFL," lawyer Steven Molo wrote in the court filing.

In January, U.S. District Judge Anita Brody rejected the proposed settlement, expressing doubts about whether the amount is enough and asking to see documentation supporting the plan.