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.

Running back James Cook and the Bills have reached agreement on a four-year, $48 million contract extension that includes $30 million guaranteed, his agents told ESPN.

James Cook isn't going anywhere, as the Buffalo Bills reportedly have brokered a new deal to keep their star running back in town.