Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2012 |  | Giles Barnes | FW |  | Doncaster Rovers | Doncaster |
| 08/2012 |  | Ricardo Clark | MF |  | Stabæk IF | Stabæk |
| 06/2012 |  | Boniek García | MF |  | CD Olimpia | CD Olimpia |
| 03/2012 |  | Warren Creavalle | MF | |||
| 02/2012 | | Brian Ownby | MF | |||
| 01/2012 | | Erich Marscheider | GK | |||
| 01/2012 | | Éder Arreola | DF |  | UCLA Bruins | UCLA |
| 01/2012 | | Nathan Sturgis | MF |  | Toronto FC | Toronto FC |
| 01/2012 |  | Macoumba Kandji | FW |  | Colorado Rapids | Colorado Rapids |
| 01/2012 | | Colin Rolfe | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2012 | | Geoff Cameron | DF |  | Stoke City | Stoke City |
| 05/2012 | | Éder Arreola | DF |  | Cal FC | Cal FC |
| 01/2012 | | Danny Cruz | MF |  | D.C. United | DC United |
| 01/2012 | | Hunter Freeman | DF | | Colorado Rapids | Colorado Rapids |
| 01/2012 | | Francisco Navas | MF |  | Atlético Bucaramanga | Bucaramanga |