Wynn, 27, was a 2009 sixth-round draft pick out of Georgia that spent the first three years of his career as a reserve with the Green Bay Packers. He registered 28 tackles and five sacks in that time frame, but was released prior to the 2012 season. Since then, he has spent time with the Tennessee Titans, San Diego Chargers and, most recently, the Dallas Cowboys.
The 6'3", 285-pound Wynn has stuck in the NFL thanks to his positional versatility; he can play end in either a 3-4 or a 4-3 scheme, and also has enough bulk to kick inside to defensive tackle on occasion. The Bills, who are moving to a 4-3 defense under new coordinator Jim Schwartz, are pretty well loaded depth-wise at defensive tackle, but are in desperate need for end depth behind projected starters Mario Williams and Jerry Hughes. For now, that's where Wynn projects in Buffalo - as an end that can platoon with Hughes, particularly on run downs.
For full context about the Bills' defensive line depth, take a peek at our up to date (and, obviously, unofficial) depth chart.