Buffalo Bills breakout star James Cook was cooperative to start training camp, participating in practice despite making it clear that he wants a new contract. Cook early Wednesday is agreeing to a new four-year contract extension worth $48 million,

Now that James Cook has his bag from the Buffalo Bills, it's time to break down his extension. The two-time Pro Bowl running back's extension has now been valued at $46 million. It tacked on four years to his rookie deal,