Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2021 |  | Steven Moreira | DF | |||
| 07/2021 |  | Erik Hurtado | FW |  | CF Montréal | Montréal |
| 07/2021 |  | Miguel Berry | FW |  | San Diego Loyal | San Diego Loyal |
| 05/2021 |  | Liam Fraser | MF |  | Toronto FC | Toronto FC |
| 04/2021 | | Saad Abdul-Salaam | DF | |||
| 03/2021 |  | Alexandru Măţan | MF |  | FC Viitorul Constanța | Viitorul Consta |
| 03/2021 | | Marlon Hairston | DF | |||
| 01/2021 | | Perry Kitchen | MF |  | Los Angeles Galaxy | L.A. Galaxy |
| 01/2021 |  | Justin Malou | DF |  | Clemson Tigers | Clemson Tigers |
| 01/2021 | | Isaiah Parente | MF |  | Wake Forest Demon Deacons | Wake Forest |
| 01/2021 | | Eric Dick | GK |  | Sporting Kansas City | Kansas City |
| 01/2021 |  | Kevin Molino | FW |  | Minnesota United FC | Minnesota Utd |
| 01/2021 | | Chris Rumsey | AT-C |  | Houston Dynamo | H. Dynamo |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 06/2021 | | Eric Dick | GK |  | Indy Eleven | Indy Eleven |
| 05/2021 | | Miguel Berry | FW | | San Diego Loyal | San Diego Loyal |
| 03/2021 | | Sebastian Berhalter | MF |  | Austin FC | Austin FC |
| 01/2021 |  | Youness Mokhtar | MF |  | ADO Den Haag | ADO Den Haag |
| 01/2021 | | Jon Kempin | GK |  | D.C. United | DC United |
| 01/2021 |  | Emmanuel Boateng | MF |  | New England Revolution | New Engl. |