Seems like Jason Jones has done his homework on this one:
Read more here: http://www.sacbee.com/sports/nba/sacramento-kings/kings-blog/article23669575.html#storylink=cpy
...D’Alessandro also was the reason former director of player personnel Shareef Abdur-Rahim left the team before this past season.
Abdur-Rahim disagreed with D’Alessandro’s decision to draft Nik Stauskas last year and expressed his belief guard Elfrid Payton would be a better fit for the Kings. According to multiple sources, Abdur-Rahim’s disagreement angered D’Alessandro, who then barred Abdur-Rahim from attending the NBA Summer League in Las Vegas, even though assembling the summer-league team was part of Abdur-Rahim’s responsibilities.
Ranadive urged D’Alessandro to make amends with Abdur-Rahim, sources said, but Abdur-Rahim elected not to return to the team...
Read more here: http://www.sacbee.com/sports/nba/sacramento-kings/kings-blog/article23669575.html#storylink=cpy