Brent was charged with intoxication manslaughter after he was involved in a car accident that killed teammate and best friend Jerry Brown.
In December, a Texas grand jury indicted Brent in the death of Brown in a Dec. 8 crash in Irving, Texas.
The charge carries a maximum sentence of 20 years in prison.
Brent's playing status hasn't been determined by the NFL. League officials are still awaiting legal judgement against Brent before making a determination of punishment.