Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2018 |  | Justin Meram | MF |  | Orlando City | Orlando City |
| 07/2018 |  | Patrick Mullins | FW |  | D.C. United | DC United |
| 05/2018 | | Jon Busch | GK | |||
| 03/2018 | | Luis Argudo | MF | |||
| 02/2018 | | Ricardo Clark | MF | |||
| 01/2018 |  | Milton Valenzuela | DF |  | Newell's Old Boys | Newell's OB |
| 01/2018 | | Gyasi Zardes | FW |  | Los Angeles Galaxy | L.A. Galaxy |
| 01/2018 | | Ben Lundgaard | GK |  | Virginia Tech Hokies | Virginia Tech Hokies |
| 01/2018 |  | Edward Opoku | FW |  | Saint Louis FC | Saint Louis FC |
| 01/2018 |  | Eduardo Sosa | MF | |||
| 01/2018 | | Mike Grella | MF |  | New York RB | New York RB |
| 01/2018 | | Abuchi Obinwa | MF |  | Pittsburgh Riverhounds | Pittsburgh Riverhounds |
| 01/2018 | | Daniel Givens | AT-C |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2018 | | Mohammed Abu | MF |  | Vålerenga IF | VIF |
| 03/2018 | | Ben Lundgaard | GK |  | Indy Eleven | Indy Eleven |
| 02/2018 | | Abuchi Obinwa | MF |  | Lusitano FCV | Lusitano FCV |
| 01/2018 | | Justin Meram | MF | | Orlando City | Orlando City |
| 01/2018 |  | Ola Kamara | FW | | Los Angeles Galaxy | L.A. Galaxy |
| 01/2018 | | Brad Stuver | GK |  | New York City FC | NY City FC |
| 01/2018 |  | Waylon Francis | DF |  | Seattle Sounders | Seattle SFC |
| 01/2018 |  | Jukka Raitala | DF |  | CF Montréal | Montréal |
| 01/2018 | | Kekuta Manneh | MF |  | CF Pachuca | Pachuca |