Taylor, a sixth-round pick in the 2011 NFL Draft, served as a backup quarterback in Baltimore for the first four seasons of his career.
The former Virginia Tech standout has attempted 35 passes in his professional career, with 19 completions for 199 yards, zero touchdowns and two interceptions. Taylor's career passer rating is 47.2.
Manuel was benched in favor of Kyle Orton after starting the first four games of last season. Orton retired after the Bills missed the playoffs.
Buffalo does not have a first-round pick in the 2015 draft after sending it to Cleveland last year.
- Josh Sanchez