Wynn, 27, is with his fifth NFL team. He was a sixth-round draft pick of the Green Bay Packers in 2009 and has appeared in 58 career games, making six starts.
At 6-foot-3, 285 pounds, the bulk of Wynn's experience has come as a defensive end in a 3-4 alignment, making his fit hard to project within the Bills' 4-3 defense. He provides more size at defensive end than Jerry Hughes or Manny Lawson but isn't as athletic as either of those players.
Wynn figures to compete for a roster spot during training camp and could be part of the defensive line rotation with a strong preseason.