Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 |  | Roberto Raychev | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 | | Samuil Stoynev | FW |  | Slavia Sofia U19 | Slavia Sofia U19 |
Slavia Sofia U17
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 | | Roberto Raychev | FW |
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 | | Samuil Stoynev | FW | | Slavia Sofia U19 | Slavia Sofia U19 |