Kyrie Irving was traded to the Boston Celtics last August, though the decision did not have LeBron James' seal of approval. According to Joe Vardon of The Athletic, James specifically asked general manager Koby Altman not to pull the trigger on a trade:
"When then-coach Tyronn Lue, also in California at the time, found out what was about to happen, he drove out to see James and put him on the phone with Cavs general manager Altman.
"James was adamant on the call—do not trade Irving, especially to the Celtics.