The Cowboys defensive end has failed another drug test and is facing a year-long suspension, sources informed of the situation told NFL Network Insider Ian Rapoport and NFL Network's Mike Garafolo.
Gregory served a four-game suspension to start the season for his first substance abuse violation and is currently serving a 10-game suspension for violating the league's substance abuse policy for a second time. Per the league's drug policy, Gregory's next suspension will be for a full year.
Gregory was originally eligible to come back next month. Now, should he appeal his latest suspension and lose, he won't play this year.