 The Celtics also agreed to the largest contract in NBA history. They're extending star forward Jason Tatum. It's a five-year deal worth $314 million. More free agency moves. Two Maryland Terps inked big paydays. Aaron Wiggins is sticking with the Oklahoma City Thunder for five years at $47 million. And Mount St. Joe's graduate Jalen Smith is signing a three-year $27 million contract with the Chicago Bulls.