Randy Gregory has been suspended indefinitely by the NFL for violating the NFL's substance abuse policy and the terms of his conditional reinstatement.
Gregory missed all but two games in 2016 and the entire 2017 season because of multiple violations of the policy in his first two seasons with the Cowboys. He returned to play in 14 games in 2018 and finished second on the Cowboys with six sacks and 28 quarterback pressures.
The Cowboys were aware Gregory was facing another penalty and were not caught off guard by the news.
"Nobody is in panic mode," Gregory's attorney, Daniel Moskowitz, said. "He's going to do everything and anything he can to get back on the field as soon as possible."