The Facts: The Chiefs announced the signings of four free agents, including Manuel. They also signed receivers Sammie Coates and Davon Grayson and defensive back Dontae Johnson.

Diehards Line: Manuel, 28, has not played an NFL game since 2017. The Raiders cut him out of the preseason in 2018. A former first-round choice of the Bills, Manuel has appeared in 30 games with 18 starts. He is 6-12 with a 58.1 completion percentage, 3,767 yards, 20 touchdowns and 16 interceptions. He becomes the fourth quarterback under contract, joining Patrick Mahomes, Chad Henne and Chase Litton. Coates is a former third-round pick of the Steelers. He played 12 games with the Texans last season before they cut him Dec. 19. Johnson is a former fourth-round pick of the 49ers. He played one game for the Bills last season after appearing in 63 games with San Francisco over four seasons.