Redskins quarterback Kirk Cousins is out for the season with a torn ACL in his left knee

Redskins quarterback Kirk Cousins is headed for season-ending surgery on his left Achilles tendon, coach Jay Gruden announced Wednesday.

He had been expected to miss six to eight weeks.

Cousins had played in six of the Redskins’ past eight games.

“He’s not ready for the game,” Gruden said.

“I can’t say that.

We’ll see what happens with him over the next couple of weeks.”

The team said it would be too soon to speculate on how long Cousins will miss.

The Redskins have a bye next week and are looking at replacing Washington’s starting quarterback, Kirk Cousins, who is scheduled to make his season debut Sunday.

“We’ll see,” Grumbaugh said.

“Kirk Cousins has had a tremendous season.

We’re excited for him to come back and play, and we’re also excited to see what the future holds.”

There are no guarantees.

We still have to wait and see what’s going to happen.

“The Redskins will start rookie Mitch Trubisky against the Lions on Sunday at FedEx Field.

He is expected to be ready for training camp.

The injury was first reported by ESPN’s Adam Schefter, who tweeted that Redskins coach Jay Fiedler confirmed the injury and that Cousins was expected to play Sunday.