Celtics Introduce Kyrie Irving and Gordon Hayward. Irving, who one a title playing with LeBron James in 2016, arrived to the Celtics this week from the Cleveland Cavaliers in a trade for Isaiah Thomas, Jae Crowder, Ante Zizic and a 2018 first-round pick from the Brooklyn Nets. Hayward, meanwhile, signed with the Celtics as an unrestricted free agent earlier this offseason.