Washington Redskins tight end Jordan Reed, who suffered a left shoulder injury last week, is unlikely to play Sunday against the Arizona Cardinals, sources told ESPN NFL Insider Adam Schefter on Thursday.

Reed said Monday his range of motion was only 30 percent and that he remained in pain and needed help getting dressed.

He suffered an AC joint separation in the second quarter of the Redskins' 31-26 loss to the Dallas Cowboys on Thanksgiving Day when he jumped for a pass in the end zone that he couldn't catch.

Reed missed the rest of the quarter and was told at halftime that he probably wouldn't be able to return. However, he did return and finished with a game-high 10 receptions for 95 yards and two touchdowns -- with eight catches and both scores coming after the injury. He also made a diving, one-handed 33-yard reception that set up a touchdown.

Redskins coach Jay Gruden said he hopes to know more about Reed's status Friday, but added that it'd be remarkable if the tight end was able to play given the amount of pain he's suffering.

"My level of optimism? I don't have any; I'm even-keel right now. I'm not expecting him to play or not to play," Gruden said. "I don't really know. I've just got to wait to see tomorrow how he's doing and we'll go from there."

He has a history of getting hurt. He hasn't played a full 16-game season in his career, having missed 16 games during the past four seasons, including two this year.

Reed has 59 receptions for 630 yards and five touchdowns in nine games this season.