Jamie Squire/Getty Images The Buffalo Bills reportedly locked in James Cook with a four-year contract extension. The contract dispute between James Cook and the Buffalo Bills is officially over. The Bills reportedly agreed to a four-year, $48 million contract with Cook, ending an off-season-long holdout — and hold-in — that came to a head with Cook opting out of Buffalo’s first preseason game against the New York Giants . The Athletic reported that Cook will receive $30 million in guaranteed