According to Shams Charania of The Athletic, who first reported that the Celtics were acquiring the Dallas Mavericks' veteran Josh Richardson.
The Dallas Mavericks are finalizing trading G/F Josh Richardson to the Boston Celtics, sources tell @TheAthletic @Stadium. Richardson is exercising his $11.6 million player option for the 2021-22 season for the deal.— Shams Charania (@ShamsCharania) July 31, 2021
With the 6-foot-5 guard having a player option worth $11.6 million for the upcoming season, it seemed Richardson's salary would easily fit into the remainder of the Gordon Hayward traded player exception, just days before the official start of the new 2021-22 campaign.
Photo used courtesy of The Associated Press