Aug 24, 2013; Arlington, TX, USA; Dallas Cowboys linebacker Sean Lee (50) talks with tight end Jason Witten (82) during the fourth quarter against the Cincinnati Bengals at AT&T Stadium. Photo Credit: USA Today Sports

The Dallas Cowboys defense has been very poor all season. So poor, in fact, that they are threatening to go down as one of the all-time worst defenses that we have ever seen. Now, there is even more cause for concern with the Cowboys defensive unit.

Star linebacker Sean Lee has been unable to stay healthy this season and he suffered a sprained ligament in his neck in his first game back to the field last week.

There was some hope that the injury would be minor and that Lee could return for the Cowboys down the stretch, but owner Jerry Jones is concerned that Lee’s season may be over.

From Nick Eatman of the team’s official website:

Jerry Jones says he’s “very concerned” Sean Lee might not make it back this year. Called Lee the “QB of the defense.”

— Nick Eatman (@nickeatman) December 17, 2013

If the defense doesn’t improve, it looks like that could be just two more weeks.

Dallas is in danger of missing the postseason if they don’t turn things around quickly, so we will have to wait and see if they can dig deep and find a way to become a serviceable unit.