Nab2k20 dynasty model Bulls jersey No.23 can't be selected when this team retires. There is no number specifically prohibited in the NBA, except that each team will retire their jerseys in recognition of players who have made outstanding contributions to their respective teams or have special significance (or some special people, such as the Celtics, for one of their bosses, head coach Brown, cardinal auerbach, as the king of fans). James called on the league to retire No.23 to show respect for Jordan, but in the end he didn't even wear No.23 himself. Because of this, you still can't return the number. Russell and Chamberlain are also famous figures in the history of the League.