| CID | Name | Position | Valid through |
| 1299662 | Rory Hennessy | LAX_CTR | 2021-06-22 |
| 1332672 | Jonathan Johnson | CLE_CTR | 2021-07-10 |
| 1438437 | Vince Winstead | CLE_APP | 2021-06-29 |
| 1476924 | Scott Fulkerson | BWI_APP | 2021-06-21 |
| 1462381 | Zachary Lane | BWI_APP | 2021-06-23 |
| 1449541 | Gregory Gustas | ANC_CTR | 2021-06-25 |
| 1204060 | Jeremy Brady | CLE_CTR | 2021-07-04 |
| 1475401 | Ethan Seys | CLT_APP | 2021-07-04 |
| 1425472 | Andreas Tzemenakis | NY_CTR | 2021-07-04 |
| 1504635 | Kyle Porter | CLT_APP | 2021-07-05 |
| 1215431 | Robert Stecki | HOU_APP | 2021-07-07 |
| 1333141 | Jake Greenbaum | ATL_CTR | 2021-06-30 |