Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 09/2013 |  | Servando Carrasco | MF |  | Seattle Sounders | Seattle SFC |
| 08/2013 |  | Alex López | MF |  | CD Olimpia | CD Olimpia |
| 07/2013 | | Bryan Salazar | FW | |||
| 06/2013 | | Brian Ownby | MF |  | Richmond Kickers | Richmond Kickers |
| 02/2013 | | Mike Chabala | DF |  | D.C. United | DC United |
| 02/2013 |  | Andrew Driver | MF |  | Heart of Midlothian | Hearts FC |
| 01/2013 |  | Jason Johnson | FW | |||
| 01/2013 | | Anthony Arena | DF | |||
| 01/2013 | | Eric Brunner | DF |  | Portland Timbers | Portland |
| 01/2013 | | Omar Cummings | FW |  | Colorado Rapids | Colorado Rapids |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 09/2013 | | Adam Moffat | MF | | Seattle Sounders | Seattle SFC |
| 03/2013 | | Brian Ownby | MF | | Richmond Kickers | Richmond Kickers |
| 02/2013 | | Je-Vaughn Watson | DF |  | FC Dallas | FC Dallas |
| 01/2013 |  | André Hainault | DF |  | Ross County FC | Ross County |
| 01/2013 | | Colin Clark | MF |  | Los Angeles Galaxy | L.A. Galaxy |
| 01/2013 | | Josue Soto | MF |  | CD Chivas | Chivas USA |
| 01/2013 | | Nathan Sturgis | MF | | Colorado Rapids | Colorado Rapids |
| 01/2013 |  | Macoumba Kandji | FW |  | AEL Kalloni | AEL Kalloni |