Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2011 |  | Jeremy Hall | MF |  | Portland Timbers | Portland |
| 08/2011 |  | Jack Stewart | DF |  | Minnesota United FC | Minnesota Utd |
| 08/2011 |  | Daniel Cruz | MF |  | Beerschot AC | Beerschot |
| 08/2011 |  | Maicon | FW |  | Toronto FC | Toronto FC |
| 07/2011 | | Paul Lombardo | AT-C | |||
| 04/2011 |  | Maykel Galindo | FW |  | CD Chivas | Chivas USA |
| 03/2011 | | Fabian Castillo | FW |  | Deportivo Cali | Deportivo Cali |
| 02/2011 |  | Richard Sánchez | GK |  | FC Dallas U19 | U19 |
| 02/2011 | | Andrew Jacobson | MF |  | Philadelphia Union | Philadelphia |
| 01/2011 | | Craig Hill | GK |  | SMU Mustangs | SMU Mustangs |
| 01/2011 | | Ricardo Villar | MF |  | SpVgg Unterhaching | U'haching |
| 01/2011 | | Josh Lambo | GK |  | Tampa Bay Rowdies | Tampa Bay |
| 01/2011 | | Chris Seitz | GK | | Philadelphia Union | Philadelphia |
| 01/2011 | | Bobby Warshaw | DF | |||
| 01/2011 |  | Brayan Martinez | MF | |||
| 01/2011 | | Peri Marosevic | FW |  | Austin Aztex | Austin Aztex |
| 01/2011 | | Jonathan Top | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2011 | | Eric Alexander | MF | | Portland Timbers | Portland |
| 08/2011 | | Eric Ávila | MF | | Toronto FC | Toronto FC |
| 08/2011 | | Milton Rodríguez | FW |  | Atlético Huila | Atlético Huila |
| 07/2011 | | Peri Marosevic | FW | | Toronto FC | Toronto FC |
| 07/2011 | | Kyle Davies | DF |  | Los Angeles Galaxy | L.A. Galaxy |
| 01/2011 | | Heath Pearce | DF | | CD Chivas | Chivas USA |
| 01/2011 | | André Rocha | MF |  | Panetolikos | Panetolikos |
| 01/2011 |  | Atiba Harris | MF |  | Vancouver Whitecaps | Vancouver |
| 01/2011 | | Dax McCarty | MF |  | D.C. United | DC United |
| 01/2011 | | Jeff Cunningham | FW |  | Columbus Crew | Columbus Crew |