Rolando McClain has been suspended four games without pay for violating the NFL's substance abuse policy.

McClain can return to the Cowboys' active roster Oct. 5, following the team's Week 4 game against the New Orleans Saints.

"I apologize to my family, the Cowboys organization, my teammates and Cowboys fans for my mistake," McClain said in a statement. "I will not break the rules of my profession in the future, and I regret my error. I look forward to returning to the field on week 5, when I hope to help my team beat the Patriots."