Allen became a 49er on May 8, 2023, signing as a free agent. The 49ers, who up to that point seldom kept a third quarterback on the 53-man roster, kept Allen as a No. 3 all season behind Purdy and Sam Darnold after the previous year’s injuries to Trey Lance, Jimmy Garoppolo, and finally Purdy in the NFC Championship Game. Allen did not take a snap.

It's been a disappointing campaign so far for the San Francisco 49ers, which reached the Super Bowl last season but are now just 5-5 and sit several spots outside the NFC playoff picture. It may get w

Brandon Allen will start in place of an injured Brock Purdy when the 49ers (5-5) also have to play without Nick Bosa on Sunday at Green Bay (7-3).