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.

Buffalo Bills general manager put his team's money where their mouth is by finally inking running back James Cook to a four-year extension. Ahead of his fourth year in the NFL, the Pro Bowl rusher was holding himself out of practices as of late to get a long-awaited extension. On Wednesday, that finally happened.

Running back James Cook is cashing in on his career year with the Buffalo Bills. The two sides agreed to a four-year, $48 million extension, according to ESPN's Adam Schefter. The deal includes $30 million guaranteed.