Kyrie Irving reportedly threatened to undergo season-ending injury if Cavs didn't trade him
Irving needs a clean-up procedure on his right knee, in which he suffered a broken kneecap during the 2015 NBA Finals. That procedure will in all likelihood be done this offseason.

Kyrie Irving's desire to leave the Cleveland Cavaliers was so great that he was open to threatening the Cavs in case they didn't want to trade him.
According to Joe Vardon of Cleveland.com, Irving told the Cavaliers that he would have had a season-ending injury if they hadn't traded him, leaving them without their starting point guard for the entire season. Irving needs a clean-up procedure on his right knee, in which he suffered a broken kneecap during the 2015 NBA Finals.
Irving was traded to the Celtics, so that procedure will likely be done this offseason.
According to Joe Vardon of Cleveland.com, Irving told the Cavaliers that he would have had a season-ending injury if they hadn't traded him, leaving them without their starting point guard for the entire season. Irving needs a clean-up procedure on his right knee, in which he suffered a broken kneecap during the 2015 NBA Finals.
Irving was traded to the Celtics, so that procedure will likely be done this offseason.