The Buffalo Bills are working to make the offense more versatile for quarterback Josh Allen, and it began when they signed tight end O.J. Howard and receiver Jamison Crowder, and it continued when they drafted running back James Cook and receiver Khalil Shakir. During offseason workouts, returning players sometimes lined up in new spots and ran different routes to mix up what the offense can do to create better matchups. "There's gonna be so much versatility in this offense now, 12 and 13 ...