The offseason for the Buffalo Bills has been dominated by running back James Cook and his want for a new contract. Set to want roughly $15 million APY, so far, the Bills don't appear to be all that keen to pay such a hefty price for their running back.

James Cook must prove his value to the Buffalo Bills, says GM Brandon Beane, as the team prepares for the new NFL season.

James Cook, running back, needs to prove that he’s still got it if he wants to play long-term with the Buffalo Bills, according to the team’s general manager, Brandon Beane.