Wade and Bosh both said they'd take less money to help the team improve, so all three won't necessarily be getting max deals.
They'll be offering Beasley to whichever team wants him in a sign and trade.
If one bites they'll all be able to get max deals. Otherwise they'll have to sign for less money.
If all three guys will sign anyway, why include Beasley? He's a competent player, and his salary could at least be used to trade for somebody.
When you only have seven guys (counting rookies and the three free agents), you pretty much have to keep all of them that you can, don't you?