After Brown was released by the Patriots, he wrote on Twitter that he did not want to play anymore and that he was angry at team owners who void contracts at will:

“Will not be playing in the @NFL anymore these owners can cancel deals do whatever they want at anytime we will see if the @NFLPA hold them accountable sad they can just void guarantees anytime going on 40m 2 months will see if they pay up!”

After nine years with the Pittsburgh Steelers, Brown signed a $50.1 million, three-year deal with the Raiders in the off-season. Brown missed nearly all of training camp and the preseason after a series of issues, including an injury to his feet and a dispute over the helmet he wanted to wear.

The Raiders fined Brown more than $200,000, which Brown wants to recoup. He is also seeking guaranteed salary worth about $30 million and his signing bonus of $1 million.

Brown filed a separate grievance to claw back his pay for Week 1 with the Patriots and the rest of the $1.025 million salary for this season. He is also seeking the $9 million signing bonus that was never paid by the team. If Brown loses some or all of his grievances, it could set a precedent making it more difficult for other players who seek recompense for similar claims.

As Brown tries to claw back his unpaid salary, the N.F.L. continues to investigate allegations made in a lawsuit by Brown’s former trainer. The woman, Britney Taylor, accused Brown of rape and sexual assault. The Patriots released Brown after he reportedly texted intimidating messages to a second accuser.

