Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 12/2019 |  | Axel Sjöberg | DF |  | Colorado Rapids | Colorado Rapids |
| 12/2019 |  | Edward Opoku | FW | |||
| 11/2019 |  | Darlington Nagbe | MF |  | Atlanta United FC | Atlanta United |
| 07/2019 |  | Youness Mokhtar | MF |  | Stabæk IF | Stabæk |
| 07/2019 |  | Jordan Hamilton | FW |  | Toronto FC | Toronto FC |
| 07/2019 |  | Eloy Room | GK |  | PSV Eindhoven | PSV Eindhoven |
| 07/2019 |  | Luis Díaz | MF | |||
| 07/2019 |  | Romario Williams | FW | | Atlanta United FC | Atlanta United |
| 07/2019 |  | Ezra Hendrickson | AS-CO | |||
| 05/2019 | | David Guzmán | MF |  | Portland Timbers | Portland |
| 05/2019 | | David Accam | FW |  | Philadelphia Union | Philadelphia |
| 04/2019 | | Jon Kempin | GK |  | Hartford Athletic | Hartford Athl. |
| 04/2019 | | Luis Argudo | MF | | Hartford Athletic | Hartford Athl. |
| 02/2019 | | Waylon Francis | DF |  | Seattle Sounders | Seattle SFC |
| 01/2019 |  | Pablo Moreira | AS-CO | |||
| 01/2019 | | Mike Matkovich | AS-CO | |||
| 01/2019 | | Aboubacar Keita | DF | |||
| 01/2019 |  | Robinho | MF |  | Ceará - CE | Ceará SC |
| 01/2019 | | J.J. Williams | FW |  | Birmingham Legion | Legion FC |
| 01/2019 | | Caleb Porter | MA | |||
| 01/2019 | | Joe Bendik | GK |  | Orlando City | Orlando City |
| 01/2019 | | Ben Lundgaard | GK |  | Indy Eleven | Indy Eleven |
| 01/2019 |  | Milton Valenzuela | DF |  | Newell's Old Boys | Newell's OB |
| 01/2019 | | Ben Cross | AS-CO |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2019 |  | Niko Hansen | MF |  | Houston Dynamo | H. Dynamo |
| 08/2019 | | Gastón Sauro | DF |  | Deportivo Toluca | Toluca |
| 07/2019 | | Joe Bendik | GK | | Philadelphia Union | Philadelphia |
| 07/2019 | | Robinho | MF | | Orlando City | Orlando City |
| 07/2019 | | Patrick Mullins | FW | | Toronto FC | Toronto FC |
| 07/2019 | | Zack Steffen | GK |  | Manchester City | Man City |
| 05/2019 | | Lalas Abubakar | DF | | Colorado Rapids | Colorado Rapids |
| 05/2019 |  | Justin Meram | MF | | Atlanta United FC | Atlanta United |
| 04/2019 | | Luis Argudo | MF | | Hartford Athletic | Hartford Athl. |
| 03/2019 | | Edward Opoku | FW | | Birmingham Legion | Legion FC |
| 03/2019 | | Ben Lundgaard | GK |  | Pittsburgh Riverhounds | Pittsburgh Riverhounds |
| 01/2019 | | Logan Ketterer | GK |  | El Paso Locomotive | El Paso |
| 01/2019 |  | Nico Estévez | AS-CO |  | USA | USA |
| 01/2019 |  | Cristian Martínez | MF |  | Chicago Fire | Chicago Fire |