De’Vondre Campbell is expected not to play for the 49ers again after leaving the team during the “Thursday Night Football” game. Head coach Kyle Shanahan told reporters that the organization is currently “working through the semantics” of Campbell’s departure.

“I mean, you heard from me last night, you heard about our players and his actions during the game. This is not something you can do to your team or your teammates and still become part of our team,” Shanahan told Reporter Friday. “We are currently working on the exact semantics of this, but we will handle the situation appropriately.”

It all happened in the third quarter of San Francisco’s 12-6 loss to the Rams, when Campbell told his coaching staff that he no longer wanted to play and left the field – he was standing on the sideline – towards the locker room.

Linebacker Dre Greenlaw, who suffered an Achilles tendon injury in the Super Bowl, returned Thursday, which led to Campbell not getting a snap.

However, when the 49ers needed Campbell in the third quarter, Shanahan said he found out the nine-year veteran — who was named first-team All-Pro with the Packers in 2021 — didn’t want to play anymore.

“We needed an experienced linebacker to fill in for Dre until he could come back,” Shanahan said. “We didn’t know how long it would take. I thought he had some ups and downs throughout the year. I thought he started slowly. I thought he got more used to our defense and how we expected people to play, and I thought he improved as the year went on.”

Campbell was criticized by his teammates after the game, with cornerback Charvarius Ward predicting that Campbell would “probably be out soon” and tight end George Kittle criticizing the linebacker for the move.

“It’s just stupid. It’s just stupid. It’s very immature,” Kittle told reporters. “I just don’t understand how you could do something like that to your team.”

The 49ers’ loss was their fourth in five games, and at 6-8, the reigning NFC champions are struggling to even make it into the postseason.

San Francisco will face the Dolphins next weekend before hosting the Lions, and their defensive depth will look different in both games and the others that follow this season.

Campbell’s decision on Thursday certainly suggested that would be the case, and Shanahan’s comments a day later confirmed it.

“It was pretty easy to see how he was doing and then we went on with our lives after that,” Shanahan said, according to ESPN, when discussing Campbell and the third quarter.