One asset the Bills bought with free agents was defensive flexibility. The acquisition of Jeff Posey gives them a player who can play LB or rush end, and the opposing offense won’t know which position Posey is playing on any given play. Takeo Spikes gives the Bills a second linebacker capable of covering on passing downs, as it already had London Fletcher. In fact, coach Gregg Williams’ plan is for both linebackers to play in dime defenses.