Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2021 |  | Dani Pacheco | FW | |||
| 01/2021 | | Nano Mesa | FW |  | Cádiz CF | Cádiz |
| 12/2020 | | Christian | GK |  | UD Logroñés U19 | U19 |
| 12/2020 | | Dani Giménez | GK | |||
| 11/2020 |  | Rajiv van La Parra | FW | |||
| 10/2020 | | Víctor Pradas | GK | |||
| 10/2020 | | Sergio García | DF |  | UD Logroñés Promesas | UD Logroñés Promesas |
| 10/2020 |  | Mateusz Bogusz | MF |  | Leeds United | Leeds Utd |
| 10/2020 | | Kike Clemente | DF |  | Real Zaragoza | Zaragoza |
| 09/2020 | | Paulino de la Fuente | MF |  | CD Alavés | Alavés |
| 09/2020 | | Unai Medina | DF |  | Sporting Gijón | Sporting Gijón |
| 09/2020 | | Víctor Martínez | DF | |||
| 09/2020 |  | Leonardo Ruiz | FW |  | Sporting CP B | Sporting B |
| 09/2020 | | Santamaría | GK |  | Rayo Vallecano | Rayo |
| 09/2020 | | Andoni López | DF |  | Athletic Club | Athletic |
| 08/2020 | | Álex Pérez | DF |  | Arminia Bielefeld | Bielefeld |
| 08/2020 | | Viguera | DF | | UD Logroñés Promesas | UD Logroñés Promesas |
| 08/2020 | | Álvaro Arnedo | MF | |||
| 08/2020 | | Martín Lapeña | FW | |||
| 08/2020 | | Roni | FW | |||
| 07/2020 | | Edu Medrano | DF |  | Haro Deportivo | Haro Deportivo |
| 07/2020 | | Sergio García | FW |  | Barakaldo CF | Barakaldo CF |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2021 | | Rajiv van La Parra | FW |  | Würzburger Kickers | Würzburg |
| 09/2020 | | Miguel Santos | DF |  | UP Langreo | Langreo |
| 08/2020 | | Míchel Zabaco | DF |  | Burgos CF | Burgos CF |
| 08/2020 | | Pablo Fid | GK |  | Sestao River | Sestao River |
| 08/2020 | | Víctor Socorro | FW |  | Valladolid Promesas | Valladolid B |
| 07/2020 | | Edu Medrano | DF |  | CD Anguiano | CD Anguiano |