Cardinals GM: No timetable for Drew Stanton's return from knee injury

Arizona Cardinals general manager Steve Keim said there is no timetable for the return of starting quarterback Drew Stanton from his knee injury. Stanton injured his knee in the third quarter of the Cardinals' 12-6 win over the St. Louis Rams on Thursday night.

Arizona Cardinals general manager Steve Keim said there is no timetable for the return of starting quarterback Drew Stanton from his knee injury, according to ESPN.com. 

Stanton injured his knee in the third quarter of the Cardinals' 12-6 win over the St. Louis Rams on Thursday night. It was originally feared that he had torn his ACL, however the tests revealed that he had suffered Grade 2 ACL and MCL sprains. While still partially torn, there is hope that he could get back on the field at some point this season as the Cardinals make a playoff run. 

While speaking on Arizona Sports 98.7 FM, Keim said the team doesn't know when Stanton could return to the lineup.

"I think it’s one of those things with that type of knee injury, everybody heals different," Keim said. "And I know that ESPN and some other outlets have put a timeline on it. It’s extremely difficult to do."

• BURKE: Despite losing Stanton, Cardinals get ugly win over Rams

Stanton stepped in for starter Carson Palmer early last month when he suffered a torn ACL against the Rams. After taking over for Palmer, Stanton went 2-2 in four starts before having to leave the game against the Rams on Thursday. The Michigan State product has thrown for 1,711 yards, seven touchdowns and five interceptions on the season. 

Third-year quarterback Ryan Lindley replaced Stanton during Thursday's game and completed four of 10 passes for 30 yards. It was Lindley's first game action since he threw for 752 yards and seven interceptions in six games as a rookie in 2012.

The Cardinals (11-3) have a one-game lead in the NFC West and will take on the second-place Seattle Seahawks on Sunday night. 

• Jared Lorenzen offers to play QB for Cardinals

- Jack Jorgensen