‘“He’s going to have to do what A.J. Klein did for us the last couple years – be that guy who can back up all three positions,” said Bills defensive coordinator Leslie Frazier. “So that’s what we’re trying to make sure he can do into training camp. Right now, he’d be the first guy in if something were to happen to Milano or Tremaine. That’s what we’re trying to determine. Can he do that? We think he can.”’