Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 10/2019 |  | Moses Nyeman | MF |  | D.C. United U17 | U17 |
| 08/2019 |  | Emmanuel Boateng | MF |  | Los Angeles Galaxy | L.A. Galaxy |
| 08/2019 |  | Ola Kamara | FW |  | Shenzhen FC | Shenzhen |
| 08/2019 |  | Felipe Martins | MF |  | Vancouver Whitecaps | Vancouver |
| 07/2019 |  | Gordon Wild | MF |  | Atlanta United FC | Atlanta United |
| 06/2019 |  | Noah Pilato | MF | |||
| 05/2019 | | Marquinhos Pedroso | DF |  | FC Dallas | FC Dallas |
| 05/2019 | | Sam Marich | G-AN | |||
| 04/2019 | | Griffin Yow | FW |  | Loudoun United | Loudoun United |
| 04/2019 | | Akeem Ward | DF | |||
| 03/2019 | | Quincy Amarikwa | FW | |||
| 02/2019 |  | Antônio Bustamante | DF | |||
| 02/2019 |  | Chris McCann | MF | | Atlanta United FC | Atlanta United |
| 01/2019 |  | Leonardo Jara | DF |  | Boca Juniors | Boca Juniors |
| 01/2019 | | Donovan Pines | DF | | Loudoun United | Loudoun United |
| 01/2019 | | Chris Seitz | GK |  | Houston Dynamo | H. Dynamo |
| 01/2019 | | Earl Edwards Jr. | GK |  | Orlando City | Orlando City |
| 01/2019 | | Lucas Rodríguez | MF |  | Estudiantes | Estudiantes |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 11/2019 |  | Wayne Rooney | FW |  | Derby County | Derby |
| 10/2019 | | Chris McCann | MF |  | Oldham Athletic | Oldham Athletic |
| 08/2019 | | Chris Durkin | MF |  | Sint-Truidense VV | STVV |
| 01/2019 |  | David Ousted | GK |  | Chicago Fire | Chicago Fire |
| 01/2019 |  | Dane Kelly | FW |  | Indy Eleven | Indy Eleven |
| 01/2019 | | Yamil Asad | MF |  | Vélez Sarsfield | Vélez Sársfield |
| 01/2019 | | Nick DeLeon | MF |  | Toronto FC | Toronto FC |
| 01/2019 | | Darren Mattocks | FW |  | FC Cincinnati | Cincinnati |
| 01/2019 | | Bruno Miranda | FW |  | Jorge Wilstermann | Wilstermann |