The NFLPA has filed a grievance against the NFL's new national anthem policy that requires players to stand during the anthem but allows them the option to remain inside the locker room as an alternative.

NFL commissioner Roger Goodell announced the policy change in May following debate over whether players should be required to stand. Although it might have been enacted as a way of silencing President Donald Trump, who was critical of players who chose to take a knee, Trump has since blasted the league's supposed solution.

The players' union announced the grievance filing on Tuesday, indicating that it speaks for "all players challenging the" policy and that it was "imposed by the NFL’s governing body without consultation with the NFLPA, is inconsistent with the collective bargaining agreement and infringes on player rights."

Still, there's hope the matter can be settled before the official grievance is heard.

"In advance of our filing today, we proposed to the NFL to begin confidential discussions with the NFLPA Executive Committee to find a solution to this issue instead of immediately proceeding with litigation," the statement reads. "The NFL has agreed to proceed with those discussions and we look forward to starting them soon.”

The league hailed the policy as a compromise, but players clearly didn't feel that was the case with the NFL never reaching out to the union on the matter. And now they're trying to fight it prior to the 2018 NFL season.