Sources told ESPN.com that Cousins has been "cleared of all wrongdoing' by authorities after a Dec. 5 altercation at a Manhattan club that resulted in teammate Matt Barnes facing misdemeanor assault charges.
The players' lawyer, Alex Spiro, confirmed to ESPN on Monday that Cousins has been cleared but declined further comment.
The Sacramento Bee reported last week that Barnes is expected to turn himself in to the New York Police Department to face his misdemeanor charges, but the newspaper said it was unclear whether that would happen during Sacramento's current eight-game road trip.
The Kings are playing in Philadelphia on Monday night.
The alleged assault took place at the Avenue nightclub after the Kings lost to the New York Knicks at Madison Square Garden on Dec. 4. Barnes was accused of choking a woman but has maintained his innocence.
Spiro said in a December statement that Barnes would cooperate with the NYPD's investigation.
Barnes and Cousins, who were together that night, have been named in a civil suit stemming from the incident filed in a New York District Court by plaintiffs Jasmine Besiso and Myrone Powell.
The lawsuit alleges that Barnes grabbed Besiso by her neck and began choking her at approximately 3 a.m. after a commotion at Avenue. Cousins is alleged to have punched Powell in the face after Powell had come to help Besiso, while Barnes is alleged to have elbowed Besiso in the face, knocking her unconscious.
A representative for Barnes later told TMZ that Barnes was defending himself against a violent group.
Barnes took to Instagram in December to say there are "two sides to every story."