49ers add 4th QB in Brandon Allen

Photo by Kirk Irwin/Getty Images Allen was with the Bengals for the previous few seasons The 49ers signed their fourth quarterback and camp arm for the summer in former Cincinnati Bengals backup Brandon Allen. Per NFL Network’s Tom Pelissero, Allen was the mentor for Joe Burrow during the previous three seasons.
One of the reasons San Francisco likely waited until after the draft was due to any free agent signing wouldn’t affect their compensatory pick formula.Shanahan had requested