 Here's Eddie Garcia. In the NBA, the Boston Celtics and star Jason Tatum have reportedly agreed on a richest contract in league history. Five years and $314 million. Tatum would overtake teammate Jalen Brown, who had the richest deal with a total value of $285 million. Former longtime Warriors guard Clay Thompson has agreed on a three-year deal worth $50 million to join the Dallas Mavericks. It was a sign-and-trade deal. Also required the Mavs to ship out swingman Josh Green to the Charlotte Hornets with two second-round picks going tonight.