The Dallas Cowboys have become concerned that Dez Bryant may be suffering from a herniated disc in his back, according to reports.

The wide receiver missed practice earlier this week and was limited yesterday with an unspecified back injury.

Sources have told FOX Sports that the team is worried that the 25-year-old has a bulging or herniated disc, and that they are taking precautions to ensure he is able to play this weekend.

Bryant has 705 receiving yards and eight touchdowns so far this season.