I wouldn't expect the Pistons (Prince) or Pacers (Dunleavy, Foster, Murphy) to waive any of their expiring contracts. Those teams are too interested in the marginal improved win/loss records that those players bring. Ditto for Cleveland with Anthony Parker and Jamario Moon.
I also wouldn't expect the Raptors to waive Reggie Evans because he is a solid trade asset + isn't up to much as a player so he'll unlikely ask for a buyout.
I would also expect the Warriors to hold onto Radmanovic due to a lack of depth on the wings nowadays. If they added some more talent there though I could see them parting ways with him.
One player who I would keep an eye on is Elton Brand (who I have no interest in) ... Phily may choose to cut the cord with him one of these days and he has horrific trade value. Reminiscent of the Sixers waiving Chris Webber a few years ago when he had $40 million left on his ticket. If Brand fails to impress Doug Collins I can see them doing this (good likelihood, especially if coupled with Hawes as a starter).
Other names -- Mo Pete, E.Curry -- neither of whom are good enough to upgrade the C's.