NFL Allows Defensive Headsets

The NFL passed a rule that will allow defensive players to have a helmet headset, similar to what quarterbacks have had for years. One defensive player will be allowed to hear play calls from the sidelines. In case of injuries or substitutions, one other player will be allowed to have the headset. But only one player can be on the field with the headset at one time. That means the backup player may have to change helmets during the game. 25 NFL teams voted for the rule, including the Bills. You have to think this was partly inspired by the Patriots spygate scandal, when they were caught stealing defensive signals. The Pats voted for the proposal.
Teams will likely designate a three down player. You'd have to figure the Bills will go with Angelo Crowell or Paul Posluszny, linebackers who call the defensive plays and stay on the field.