BUFFALO, N.Y. — Two-time Pro Bowl RB James Cook and the Buffalo Bills have reached an agreement on a contract extension, according to Adam Schefter.

Schefter says the four-year, $48 million extension includes $30 million guaranteed, the most guaranteed money for a running back in the last give years.

"James could only envision himself as a Buffalo Bill," said Cooks agent, Zach Hiller of LAA. "We are extremely thankful to the entire Bills organization and glad we could make that happen."

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