Buffalo Bills running back James Cook has agreed to a four-year, $48 million extension with the franchise, which includes $30 million guaranteed, per ESPN's Adam Schefter and multiple reports. Cook attended mandatory mini camp earlier this summer and decided to end his "hold-in" on Tuesday as a full participant in practice this preseason.

NFL Network Insider Tom Pelissero combs over the contract extension details for Buffalo Bills running back James Cook that was agreed to earlier today.

Bills running back James Cook has ended his contract standoff by signing a four-year deal, Buffalo general manager Brandon Beane said.