LONDON -- Arizona Cardinals quarterback Carson Palmer will have surgery to repair his broken left arm when the team returns home and could miss anywhere between eight weeks and the rest of the season, coach Bruce Arians said Sunday night after a 33-0 loss to the Los Angeles Rams.

Drew Stanton, who finished 5-of-14 for 62 yards and an interception in place of Palmer, will take over as the Cardinals' starter beginning Nov. 5 at San Francisco after their bye this weekend, Arians confirmed.

"We played with Drew before, you know," Arians said. "We have lost [Palmer] long. Drew has played and won a lot of games for us.

"All the confidence, he and Blaine [Gabbert] stepped up to take over the quarterback job."

Arians said he won't consider playing Gabbert ahead of Stanton, who's 6-3 when starting in place of Palmer since they became teammates in 2013. Stanton was 5-3 in 2014, when Palmer missed 10 games with a shoulder and knee injury. Stanton missed the last two games that season with his own knee injury.

Gabbert has 40 career starts in his seven-year career, including three years with the Jacksonville Jaguars, who made him the 10th overall pick in 2011, and three with the San Francisco 49ers before he signed with Arizona in May. "He's our No. 2," Arians said of Stanton. "I don't skip two and go to three."

Carson Palmer is out at least eight weeks after suffering a broken arm in Sunday's loss. AP Photo/Matt Dunham

Palmer suffered the injury late in the second quarter as he was hit by Rams defensive tackle Aaron Donald with 5:48 left in the first half on a pass that was intercepted by safety Lamarcus Joyner. Palmer tried to go back in on Arizona's next series, Stanton said, but wasn't allowed. He didn't return for the rest of the game.

Palmer was evaluated by team doctors on the sideline. He jogged around the field and to the locker room shortly after, making sure not to move his left arm while he ran. As Palmer tried to get back in the game, Stanton was unsure whether he was going in.

"Unfair to Drew because Drew hasn't had any practice," Arians said. "I thought he did as well as he could today. He'll do a lot better next week."

Stanton, who said he's developed a good studying system with Gabbert, feels ready to assume the starting role.

"I feel great," Stanton said. "That's why you put the time and effort in to be prepared. You never want to see something like this happen, especially to Carson. We've been together for five years. My heart goes out to him and really this team. Losing a guy like that that, [he's] a Pro Bowler, a potential Hall of Famer. It's tough. And losing a friend and a teammate.

"Unfortunately that's what happens in this league."