Durant was injured during the second half of a 20-17 overtime loss to the Washington Redskins on Monday night.
Durant was the team’s leading tackler this season, with 49 total stops, including 10 in the game against Washington. He also had two forced fumbles and an interception in six games he has played in this year. He missed two games earlier this year with a groin injury.
"He’s got a torn bicep, so that’s probably going to be it for him," Jones said, according to the Cowboys' official website. "[Washington] had guys missing, too, and they were able to contain us. We obviously weren’t able to match them."
In one of those games he missed, a Week 3 victory against the St. Louis Rams, Durant was replaced by rookie Anthony Hitchens, who had 18 tackles that day. Hitchens or fourth-round pick Kyle Wilber is next on the depth chart behind Durant at the weakside linebacker.
Dallas (6-2) plays the Arizona Cardinals (6-1) at home on Sunday.
- Scooby Axson