Honestly, there aren't many. How many teams will pay (give you a draft pick) to give up a good player (a contributor)? The only time that would occur is if the team is fighting the Lux Tax. Boston (Kanter) and Philly (Scott) are really the only candidates.
Bjelica would be awesome. However, Portland would have to give the Kings something to get him. Bjelica's contract is non-guaranteed - so if the only motivation was to save money (or a roster spot), Kings would just cut him and walk away. If they are contemplating that, then a 2nd and a TPE might be enough value to get him from the Kings.