Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2021 |  | David Wallentinsson | MF |  | IK Sirius U19 | U19 |
| 01/2021 | | Filip Hennig | ||||
| 01/2021 | | Leo Berggren | GK | |||
| 01/2021 | | Lucas Berglund | DF | | IK Sirius U19 | U19 |
| 01/2021 | | Oliver Högberg | DF | | IK Sirius U19 | U19 |
| 01/2021 | | Isak Mattsson | DF | | IK Sirius U19 | U19 |
| 01/2021 | | Jesse Singh | DF |  | Fanna BK | Fanna BK |
| 01/2021 | | Robin Ahmad | MF |  | IFK Uppsala | IFK Uppsala |
| 01/2021 | | Julius Brekkan | MF |  | Dalkurd FF | Dalkurd FF |
| 01/2021 | | Filiph Ededal | MF | | IK Sirius U19 | U19 |
| 01/2021 | | Erik Eriksson | MF |  | IK Sirius | IK Sirius |
| 01/2021 | | William Franzén | MF | |||
| 01/2021 | | Felix Ljungberg | MF |  | Enköpings SK FK | Enköpings SK FK |
| 01/2021 | | Daniel Norrby | MF | | IK Sirius U19 | U19 |
| 01/2021 | | Emil Özkan | MF |  | IK Sirius U17 | U17 |
| 01/2021 | | Victor San José | MF | | IK Sirius U19 | U19 |
| 01/2021 | | Hampus Tjärnhell | FW |  | Skiljebo SK | SSK |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 | | August Ahlin | GK | | IK Sirius | IK Sirius |
| 02/2021 | | Umit Aras | DF | | Dalkurd FF | Dalkurd FF |
| 01/2021 | | Patrik St. Cyr | MF |  | Bälinge IF | Bälinge IF |
| 01/2021 | | Carl Winsten | MF |  | Stöde IF | Stöde IF |
| 01/2021 | | Dodou Mbye | FW |  | Åbyggeby FK | Åbyggeby FK |