kyrie irving is a negative asset. he is a sunk cost. they will be unable to trade him and they are not going to re-sign him so the idea of keeping him so you can retain his bird rights seems silly.
they can keep him on the roster for this year and hope he figures it out and has a life change at 30. seems unlikely but they dont really have any other options.
they arent going to cut him, they'll just keep him away from the team.