Wasington's starting inside linebackerwill undergo surgery to repair a torn labrum in his shoulder, ending his season. Foster led the team in tackles in 2016.
Per ESPN, Redskins coach Jay Gruden said Foster would be placed on injured reserve at some point Friday.
"The 'backer separated his shoulder in a Week two win at the, but he eventually tore his labrum, and the pain continued to mount. He was limited in practice Thursday, but after practices, he was always seen with a large ice pack wrapped around his shoulder. He informed the Redskins Friday morning of his desire to have surgery," noted ESPN.
"He can't sleep at night," Gruden said. "He fought through a couple games for us. The pain has been unbearable, and his range of motion isn't there."
Gruden also said starting centerwon't play vs. the Sunday because of issues with his quads. Long had been dealing with the injury for a couple of weeks and was forced to miss five snaps in Monday's loss at Philadelphia. He returned because of injuries to others. Rookie will start in his place Sunday.
"The Redskins also enter Sunday's pivotal game with numerous questions along the line. Guard(knee) and left tackle (knee) are questionable. Neither practiced this week, and both likely will be game-time decisions. Williams hasn't practiced since hurting his knee on Oct. 2 vs. Kansas City, but he hasn't yet missed a game.
"Because of those injuries, it could force Williams to play guard for the second time in his career, withreplacing him at tackle. The one good bit of injury news: Gruden said, barring any setbacks, corner should play Sunday after missing two games with a fractured rib," wrote ESPN.