San Francisco 49ers running back Christian McCaffrey walks off the field after a preseason NFL football game against the New Orleans Saints in Santa Clara, Calif., Sunday, Aug. 18, 2024. (AP Photo/Jed Jacobsohn)

San Francisco 49ers quarterback Brock Purdy (13) throws against the Las Vegas Raiders during the first half of an NFL preseason football game, Friday, Aug. 23, 2024, in Las Vegas. (AP Photo/David Becker)

San Francisco 49ers head coach Kyle Shanahan stands on the sideline during the second half of an NFL preseason football game against the Las Vegas Raiders, Friday, Aug. 23, 2024, in Las Vegas. (AP Photo/David Becker)

FILE - San Francisco 49ers offensive tackle Trent Williams (71) blocks during the NFC Championship NFL football game against the Detroit Lions in Santa Clara, Calif., Jan. 28, 2024. (AP Photo/Scot Tucker, File)