Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 12/2021 |  | Carlos Anguiano | MF |  | Tacoma Defiance | Tacoma Def. |
| 12/2021 |  | Baboucarr Njie | MF |  | Rio Grande Valley FC | RGV FC |
| 12/2021 | | Marcus Epps | MF |  | San Antonio FC | San Antonio FC |
| 09/2021 |  | Jonathan Levin | MF | |||
| 09/2021 | | David Loera | MF |  | Orlando City | Orlando City |
| 09/2021 |  | Luis Seijas | MF | |||
| 08/2021 |  | Darren Mattocks | FW | |||
| 07/2021 | | Manuel Madrid | DF |  | Mineros de Zacatecas | Zacatecas |
| 06/2021 | | Tate Schmitt | MF |  | Real Salt Lake | Salt Lake |
| 06/2021 |  | David Egbo | FW |  | Vancouver Whitecaps | Vancouver |
| 05/2021 |  | Ben Lundt | GK |  | FC Cincinnati | Cincinnati |
| 04/2021 | | Niall Dunn | DF | |||
| 04/2021 |  | Noah Billingsley | DF |  | Minnesota United FC | Minnesota Utd |
| 03/2021 | | Ryan Flood | FW | |||
| 03/2021 | | Andre Rawls | GK |  | Colorado Rapids | Colorado Rapids |
| 03/2021 | | Jeremy Kelly | MF | | Colorado Rapids | Colorado Rapids |
| 03/2021 |  | Danny Stone | AS-CO |  | OKC Energy FC | OKC Energy |
| 03/2021 | | James Musa | MF | |||
| 01/2021 | | Deklan Wynne | DF | | Colorado Rapids | Colorado Rapids |
| 01/2021 |  | Prince Saydee | FW |  | Miami FC | Miami FC |
| 01/2021 | | Lalo Delgado | GK |  | Las Vegas Lights FC | Las Vegas Lights FC |
| 01/2021 | | Seyi Adekoya | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 12/2021 | | David Loera | MF | | Orlando City | Orlando City |
| 12/2021 | | Tate Schmitt | MF | | Real Salt Lake | Salt Lake |
| 12/2021 | | David Egbo | FW | | Vancouver Whitecaps | Vancouver |
| 09/2021 | | Tobi Adewole | DF |  | Indy Eleven | Indy Eleven |
| 08/2021 | | Ben Lundt | GK | | FC Cincinnati | Cincinnati |
| 08/2021 |  | Rufat Dadashov | FW |  | FC Schalke 04 II | Schalke II |
| 08/2021 | | Seyi Adekoya | FW | | OKC Energy FC | OKC Energy |
| 07/2021 | | Deklan Wynne | DF | | OKC Energy FC | OKC Energy |
| 07/2021 | | Jeremy Kelly | MF | | Colorado Rapids | Colorado Rapids |
| 02/2021 | | A.J. Cochran | DF | | Indy Eleven | Indy Eleven |
| 01/2021 |  | Corey Whelan | DF |  | Wigan Athletic | Wigan |
| 01/2021 | | Junior Flemmings | MF |  | Birmingham Legion | Legion FC |
| 01/2021 |  | Jose Aguinaga | FW |  | El Paso Locomotive | El Paso |