I think Aldridge is , like most of others, confused by the rules. Case and point:
Boston would like to use the contract of Rasheed Wallace, who has told the Celtics he will retire, to get a trade exception. If Boston sends Wallace's contract to another team -- which could remove the salary from its cap as long as Wallace stays retired -- for a draft pick, the Celtics could get a trade exception for as much as the $6.3 million Wallace was due to receive.
This makes no sense. First, it would have to be a team under the cap. Second, why would that team do it without the Celtics giving up cash/picks? Aldridge makes it sound like WE would get the draft pick. Sheeds contract is only valuable to teams looking to shed a player/salary. Trading Sheed for a TPE is a pipe dream.
Can it only be a team under the cap, or can it also be a team with a trade exception? There were a bunch of those exceptions created when Boozer, Stoudamire, James, Bosh signed with new teams (but there've been some trades, so not sure who has what remaining).
I think Aldridge meant that the Celtics would have to give up a draft pick, but he wrote it wrong (he should have not included the second "--").