Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 12/2012 |  | José Sánchez | MA | |||
| 08/2012 |  | Shalrie Joseph | MF |  | New England Revolution | New Engl. |
| 07/2012 |  | Bobby Burling | DF | |||
| 07/2012 | | Tristan Bowen | FW |  | KSV Roeselare | Roeselare |
| 05/2012 | | Danny Califf | DF |  | Philadelphia Union | Philadelphia |
| 05/2012 | | Juan Agudelo | FW |  | New York RB | New York RB |
| 04/2012 |  | José Correa | FW |  | Boyacá Chicó | Boyacá Chicó |
| 04/2012 |  | Paolo Cardozo | MF |  | Los Angeles Galaxy | L.A. Galaxy |
| 04/2012 | | Mark Delgado | MF | |||
| 03/2012 | | Patrick McLain | GK | |||
| 02/2012 | | César Romero | FW | |||
| 01/2012 | | Tim Melia | GK | |||
| 01/2012 | | Casey Townsend | FW | |||
| 01/2012 | | Scott Gordon | DF |  | Fort Lauderdale Strikers | Ft. Lauderdale |
| 01/2012 | | Rauwshan McKenzie | DF |  | Real Salt Lake | Salt Lake |
| 01/2012 | | James Riley | DF |  | Seattle Sounders | Seattle SFC |
| 01/2012 | | John Valencia | DF |  | Atlético Junior | Atlético Junior |
| 01/2012 | | Jorge Villafaña | DF | |||
| 01/2012 |  | Miler Bolaños | MF |  | LDU Quito | LDU Quito |
| 01/2012 |  | Marvin Iraheta | MF | |||
| 01/2012 | | Oswaldo Minda | MF |  | Deportivo Quito | SD Quito |
| 01/2012 |  | Ryan Smith | MF |  | Sporting Kansas City | Kansas City |
| 01/2012 | | Peter Vagenas | MF |  | Vancouver Whitecaps | Vancouver |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2012 | | Blair Gavin | MF | | New England Revolution | New Engl. |
| 05/2012 | | Heath Pearce | DF | | New York RB | New York RB |
| 05/2012 |  | Michael Lahoud | MF | | Philadelphia Union | Philadelphia |
| 01/2012 |  | Seth Owusu | DF |  | Medeama SC | Medeama |
| 01/2012 |  | Michael Umaña | DF |  | Comunicaciones | Comunicaciones |
| 01/2012 |  | Zarek Valentin | DF |  | CF Montréal | Montréal |
| 01/2012 | | Bryan de la Fuente | MF |  | Club Tijuana | Club Tijuana |
| 01/2012 | | Francisco Mendoza | MF |  | Santos de Guápiles | Santos |
| 01/2012 |  | Paulo Nagamura | MF | | Sporting Kansas City | Kansas City |
| 01/2012 | | Mariano Trujillo | MF |  | Gallos Blancos | Querétaro |
| 01/2012 | | Justin Braun | FW | | CF Montréal | Montréal |
| 01/2012 | | Jesús Padilla | FW |  | CD Veracruz | CD Veracruz |