Richie Incognito filed a grievance Thursday against the Miami Dolphins over his suspension.
A person familiar with the situation told The Associated Press that the guard filed the grievance over his suspension for conduct detrimental to the team. The person spoke Thursday on condition of anonymity because the grievance has not officially been announced.
Incognito was suspended by the team Nov. 3 for misconduct related to the treatment of teammate Jonathan Martin, who abruptly left the Dolphins late last month to receive help for emotional issues.
The NFL is investigating whether Incognito harassed or bullied Martin. Incognito has said the conduct was all part of the normal locker room environment.
ESPN first reported the grievance.
Incognito has missed one game, and the suspension by the team can last for four games. The Dolphins, who have not said how long Incognito is suspended, did not immediately comment about the grievance.