Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 12/2018 |  | Marcos Ureña | FW |  | Los Angeles FC | Los Angeles |
| 09/2018 |  | Yura Movsisyan | FW | |||
| 07/2018 |  | Nicolas Hasler | MF |  | Toronto FC | Toronto FC |
| 07/2018 |  | Raheem Edwards | MF |  | CF Montréal | Montréal |
| 07/2018 |  | Nicolás Del Grecco | DF |  | FC Tulsa | FC Tulsa |
| 03/2018 |  | Alan Gordon | FW | |||
| 03/2018 | | Patrick McLain | GK | |||
| 03/2018 | | Kevin Ellis | DF | |||
| 02/2018 | | Diego Campos | MF | |||
| 02/2018 |  | Tony Tchani | MF |  | Vancouver Whitecaps | Vancouver |
| 02/2018 |  | Elliot Collier | FW |  | Indy Eleven | Indy Eleven |
| 02/2018 |  | Aleksandar Katai | MF |  | CD Alavés | Alavés |
| 01/2018 |  | Jon Bakero | FW | |||
| 01/2018 |  | Rafael Ramos | DF |  | Orlando City | Orlando City |
| 01/2018 |  | Mo Adams | MF |  | MLS PC Predator | MLS PC Predator |
| 01/2018 | | Grant Lillard | DF | |||
| 01/2018 | | Nuno Gomes | TE-C |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2018 | | Rafael Ramos | DF |  | FC Twente | FC Twente |
| 07/2018 | | Jon Bakero | FW | | Toronto FC | Toronto FC |
| 01/2018 |  | Jorge Bava | GK |  | Liverpool | Liverpool FC |
| 01/2018 | | Matt Lampson | GK |  | Minnesota United FC | Minnesota Utd |
| 01/2018 |  | David Accam | FW |  | Philadelphia Union | Philadelphia |
| 01/2018 |  | Arturo Álvarez | MF |  | Houston Dynamo | H. Dynamo |
| 01/2018 |  | Collin Fernández | MF |  | Phoenix Rising | Phoenix |
| 01/2018 |  | Juninho | MF |  | Club Tijuana | Club Tijuana |