We can start looking at the bottom teams, those that have little (but still a glimmer) chance at the playoffs; excluding Chivas, I have no clue what is happening to them. I'll update this with other teams as the playoff picture gets clearer.
The Unprotected list:
Montreal Impact
Troy Perkins GK
Hassoun Camara D
Matteo Ferrari D
Krzysztof Król D
Gorka Larrea M
Adrián López D
Issey Nakajima-Farran D
Heath Pearce D
Chicago Fire
Juan Luis Anangonó F
Razvan Cocis M
Robert Earnshaw F
Matthew Fondy F
Patrick Ianni D
Steven Kinney D
Jeff Larentowicz D/M
Patrick Nyarko M
Logan Pause M (retire)
Kyle Reynish G
Gonzalo Segares D
Matt Watson M
SJ Quakes
Brandon Barklage D
Shaun Francis D
Clarence Goodson D
Andreas Görlitz D
Ty Harden D
Atiba Harris M
Jason Hernandez D
Jean-Baptiste Pierazzi M
Khari Stephenson M
Jordan Stewart D
Colorado Rapids
Davy Armstrong M
Edson Buddle F
Marc Burch D
Kamani Hill M
Nick LaBrocca M
Brian Mullan D
Joe Nasco G
Vicente Sánchez M
Marvell Wynne D