Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2017 |  | Villalón | DF |  | Rayo Majadahonda | Majadahonda |
| 07/2017 | | Jesús Mena | MF |  | Getafe CF B | Getafe B |
| 07/2017 | | Christian Manrique | DF |  | Rayo Vallecano U19 | Rayo U19 |
| 07/2017 | | Paco Puertas | DF | |||
| 07/2017 |  | Filipe | MF | | Rayo Vallecano U19 | Rayo U19 |
| 07/2017 |  | Abu Sanunu | MF | |||
| 07/2017 |  | Edward Bolaños | FW | | Rayo Vallecano U19 | Rayo U19 |
| 07/2017 |  | Kalvin Ketu | FW |  | Alcobendas CF | Alcobendas CF |
| 07/2017 | | Luis Cembranos | MA | |||
| 07/2017 | | Ricardo da Silva | AT-C |  | NK Celje | NK Celje |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2017 | | Javier Ontiveros | FW |  | Arenas de Getxo | Arenas de Getxo |
| 08/2017 | | Kike Pérez | MF |  | CD Lugo | Lugo |
| 08/2017 | | Abu Sanunu | MF |  | CD San Fernando de Henares | San Fernando |
| 07/2017 | | Javier Pelayo | MF |  | CD Cristo Atlético | Cristo Atlético |
| 07/2017 | | Álvaro Rivero | FW |  | Inter de Madrid | Inter de Madrid |
| 07/2017 |  | Žarko Grbović | FW |  | CD Toledo | CD Toledo |