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 breakout star James Cook was cooperative to start training camp, participating in practice despite making it clear he wants a new contract. The third-year running back, who will make $5.

This article was originally published on www.si.com/nfl/bills as Bills' James Cook another example of Brandon Beane's mantra. Do a quick Google search for, "draft. develop. re-sign", and you'll likely see Buffalo Bills' general manager Brandon Beane's name in the results.