San Francisco 49ers linebacker De’Vondre Campbell walked off the sideline during his team’s season-ending loss to the Los Angeles Rams on Thursday night, in an apparent refusal to play that drew scorn from his teammates.

The veteran had been dropped from the starting lineup with the return of previously injured Dre Greenlaw, but when Greenlaw was forced out of the game in the third quarter, Campbell declined to play, according to 49ers coach Kyle Shanahan.

“He said he didn’t want to play today,” Shanahan told reporters after the game.

It was not immediately clear whether Campbell would face disciplinary action or be expelled from the team.

“We’ll figure something out, but I don’t know right now,” Shanahan said.

The coach emphasized that Thursday night’s incident will not be a lasting distraction.

“People notice, but when someone says that, you move on,” he said. “We don’t deal with that anymore.”

Tight end George Kittle and cornerback Charvarius Ward, two of the team’s most respected players, voiced their displeasure with Campbell’s inaction.

“It’s hard to win football games when someone doesn’t want to play football,” Kittle said. “I think that’s ignorant. And I think it’s just stupid. It’s just stupid and very immature. I just don’t understand how you could do something like that to your team.”

Ward said Campbell never should have put on a uniform if he didn’t want to play Thursday.

“It’s really stupid, it definitely hurt the team,” said Ward, who was playing his third game since the death of his one-year-old daughter. “He’ll probably get a cut soon.”

The Los Angeles Rams defeated San Francisco 12-6, virtually eliminating the reigning NFC champion 49ers from playoff contention.

The 6-8 Niners have three games left and are 2 1/2 games behind first-place Seattle (8-5). The loss to the Rams dropped San Francisco’s playoff hopes to less than 1%.

A representative for the National Football League Players Association could not immediately be reached for comment Friday.

The 49ers signed Campbell to a one-year contract in March as a placeholder for Greenlaw, who tore his left Achilles tendon during the Super Bowl.