The cliff-notes version of Murphy's buyout options exploration (it appears his list of subjects to explore is half based on twitter suggestions, half on his own considerations)
Guards
Milos Teodosic - Doesn't do anything but catch-and-shoot 3s and sweet passes, but that's what the Raptors need.
Shelvin Mack - Low-ceiling option average at shooting from deep, can run the offence, was a Raptor Killer at one point, but is almost dead last in +/-
Jeremy Lin - Hawks don't intend to buy him (or anyone) out apparently.
Jamal Crawford - Brings experience and looks the part of a microwave bench guy, but is no longer an efficient scorer and is 38.
Wings
Wes Matthews - Ideal candidate, but intends to sign in Indiana.
Wayne Ellington - Murphy's ideal candidate and the 2nd best option behind Matthews because he lacks D. But Woj says he's headed to Detroit.
Troy Daniels - Off-brand Ellington. Good shooter (40% from 3) but that's all he has.
Vince Carter - It seems that he isn't hung up on chasing a ring and prefers a situation on a young team as a mentor rather than sitting on a bench as a niche player.
Nik Stauskas - Everyone wants him because he's Canadian, but he's a low-% shooter for a guy who would be a pure specialist (35%). He'd be the depthiest of depth options if he was a target.
Ben McLemore - High profile guy with pedigree as a top-shelf draft pick, but he's a 35% shooter as well and doens't do much else of note and has continuously struggled to find minutes elsewhere in the league.
JR Smith - Cavs don't intend to buy him out. (on a personal level, all I have to do is watch Lebron incredulously stare at him as he pissed away that game in the finals to know why I wouldn't wand him if he were bought out.)
Forwards
Markieff Morris - One of the best players available, history with Kyle Lowry, but he's had some neck issues that muddy his timeline. Tough and a viable PF/small C, but there are questions about his temper.
Carmelo Anthony - Broken shell of his former self who hasn't adapted to the changing reality of his ability to contribute to a team. Doesn't fit with what the Raptors need.
Michael Beasley - a bench scorer, has championship experience, and is apparently a good teammate now in spite of his rep for being a disengaged, disinterested floater when he was younger. But his skillset is limited. Murphy wants him. (I'm not convinced)
Chandler Parsons - Was a great player years ago, but injuries have curtailed his effectiveness to the point that he's barely played the last few seasons. Nobody knows what he could possibly bring to the table and if he would need some G-League time to get his game legs back)
Jeff Green - Having a good year, but no indication the Wizards would buy him out
Lance Thomas - Has a non-guaranteed deal for next year which makes him more valuable as a trade chip than a buyout candidate.
Bigs
Robin Lopez - Would offer leadership, experience, and defence. But he has a checkered history with the Raptors and would have to get used to playing a much lesser role than he has been.
Enes Kanter - Scorer and rebounder, but limited utility based on matchup issues, attitude problems, and the fact that he was already pissed at the Knicks for barely using him (which is exactly what the Raptors would do)
Marcin Gortat - Would have to accept a limited role like Lopez and Kanter. Would provide toughness and decent contributions, but he also has a history with the team (though it was with Valanciunas)
Zach Randolph - Hasn't played since March of last year and not exactly a center. His biggest upside is as a fun story to put with Gasol.
Frank Kaminsky - Stretch 5 who's hit 35% from deep (not great, but OK for a big). It's also all he really has going for him. The fact that he's fallen out of the Hornets rotation almost entirely is a big red flag about his usefulness.
Channing Frye - Probably can't contribute
Dewayne Dedmon - Probably won't be bought out because of a contract quirk, and again he's a Hawk and they're not looking to buy people out.
DeAndre Jordan - the Kincks don't intend to buy him out
It's not a super encouraging list, but the reality of the buyout market is that most of the guys you'd pick up are misfit toys.