1. Trading him would ensure that we get something back with his departure. When, not if, Boozer opts out of his contract at the end of the season, he could sign with another team and the Jazz wouldn't be guaranteed to land a free agent to take his place. And a sign and trade would be difficult and not a sure thing either. Trading him is the only way, we ensure getting something for him.
2. We can't have two front court players that can't block a shot. With a starting power forward and center who have a combined vertical jump of 18 inches and average reaches, opposing team's guards must light up if they get by their man. Because Boozer and Okur are going to get posterized if they try to block McGrady or Bryant's shot.
3. His trade value is so high right now. With the amount of teams in the East that don't have a low post presence (Bulls, Pacers, Bucks, Wizards, Cavs (whoops)) and teams like Detroit that are looking for a change in personnel, the Jazz could get great return on a Boozer trade. It isn't unheard of that we could get a marquee player like Deng, or Jamison, or Michael Redd, and some picks or a young up and coming player. Deng and Kirilenko would make a fun 3-4 tandem.
4. Andrei Kirilenko would be able to move to his more natural position. We cringe at AK's bloated contract now, but the guy was ridiculous when he was the starting power forward. Bill Simmons called him "one of two players i would pay money to watch." Three times in his career, AK has posted quintuple fives (at least 5 in 5 categories) and is one of two people (Hakeem Olajuwon) to record quintuple sixes.
5. His matador defense costs the team games. Remember when Zach Randolph scored 25 points, grabbed 14 rebounds and shot 11-14 from the floor in an inexcusable road loss to the Knicks. And no Jazz fan can forget when Drew Gooden and Charlie Villanueva each scored 26 points against the Jazz almost doubling their season averages. And in both of our losses to Minnesota on the road, the Jazz couldn't stop Al Jefferson in the fourth quarter. By my estimate, Boozer's defensive non-efforts, cost the Jazz about 4 games last season and really the #1 seed.
6. Deron is the leader of this team and Boozer's ego might not be able to handle that. The reason the Jazz could thrive with two superstars in the 90's, is because one of those superstars was John Stockton. He didn't care about glory, or money, or wearing modest basketball shorts. Deron is the leader of the Jazz in spirit and in checkbook and if Boozer can't accept that, there is potential for problems.
7. 15 points, 11 rebounds and 36% shooting. Those are the numbers that Boozer put up in the Lakers series, well under his averages. Boozer did a bit of a disappearing act in the series being outplayed by Odom on offense and defense. And since we lost two of those games, by less than 7 points, Boozer's play could have been the difference. The Jazz need players that can take them to the promised land.
7b. If Boozer asks the Jazz to trade him. Fans won't want to hear this, but family is more important than basketball. It hurt at the time, but the Jazz absolutely made the right decision in letting Derek Fisher go. If Boozer needed to move to improve the health of his son with sickle cell anemia, the Jazz should grant his wish.