Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2018 |  | Rafa Páez | DF |  | UCAM Murcia CF | UCAM Murcia |
| 01/2018 |  | John Guidetti | FW |  | Celta de Vigo | Celta de Vigo |
| 01/2018 |  | Hernán Pérez | MF |  | RCD Espanyol | RCD Espanyol |
| 12/2017 | | Abelardo | MA | |||
| 12/2017 | | Iñaki Tejada | AS-CO | |||
| 09/2017 |  | Gianni De Biasi | MA | |||
| 09/2017 | | Medrán | MF |  | Valencia CF | Valencia |
| 09/2017 |  | Munir | FW |  | FC Barcelona | Barcelona |
| 08/2017 | | Bojan | FW |  | Stoke City | Stoke City |
| 08/2017 | | Nando García | MF | | Valencia CF | Valencia |
| 08/2017 | | Pina | MF |  | Club Brugge KV | Brugge KV |
| 07/2017 | | Sivera | GK |  | Valencia CF B | Valencia B |
| 07/2017 |  | Mubarak Wakaso | MF |  | Panathinaikos A.O. | Panathinaikos |
| 07/2017 | | Burgui | FW | |||
| 07/2017 | | Adrian Diéguez | DF |  | AD Alcorcón | Alcorcón |
| 07/2017 | | Pedraza | FW | |||
| 07/2017 | | Aritz Castro | GK | |||
| 07/2017 | | Joritz Landeta | GK |  | CD Alavés B | CD Alavés B |
| 07/2017 | | Héctor Hernández | DF |  | Granada CF | Granada CF |
| 07/2017 |  | Guillermo Maripán | DF |  | Universidad Católica | U. Católica |
| 07/2017 | | Rubén Duarte | DF | | RCD Espanyol | RCD Espanyol |
| 07/2017 | | Víctor López | DF | | CD Alavés B | CD Alavés B |
| 07/2017 |  | Enzo Zidane | MF |  | Real Madrid | Real Madrid |
| 07/2017 |  | Ermedin Demirović | FW |  | RB Leipzig II | RB Leipzig II |
| 07/2017 | | Iñigo Simón | RE-C | |||
| 07/2017 |  | Nenad Njaradi | PH-C |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2018 | | Rafa Páez | DF |  | NK Rudeš | NK Rudeš |
| 01/2018 | | Einar Galilea | DF | | NK Rudeš | NK Rudeš |
| 01/2018 | | Óscar Romero | MF |  | Shanghai Shenhua | Shanghai Shenh. |
| 01/2018 | | Enzo Zidane | MF |  | FC Lausanne-Sport | FC Lausanne |
| 08/2017 | | Nando García | MF |  | Lorca FC | Lorca |
| 08/2017 | | Nenad Krstičić | MF |  | Crvena Zvezda | Crv. Zvezda |
| 08/2017 | | Sergio Llamas | MF |  | Real Unión | Real Unión |
| 08/2017 | | Toquero | FW |  | Real Zaragoza | Zaragoza |
| 07/2017 | | Zouhair Feddal | DF |  | Real Betis | Betis |
| 07/2017 |  | Deyverson | FW |  | Palmeiras | Palmeiras |
| 07/2017 | | Adriàn Ortolá | GK |  | FC Barcelona B | Barcelona B |
| 07/2017 | | Théo Hernández | DF |  | Atlético Madrid | Atlético |
| 07/2017 | | Raúl Carnero | DF |  | CD Leganés | Leganés |
| 07/2017 | | Kiko Femenía | MF |  | Watford FC | Watford |
| 07/2017 | | Marcos Llorente | MF | | Real Madrid | Real Madrid |
| 07/2017 | | Édgar Méndez | FW |  | Cruz Azul | Cruz Azul |
| 07/2017 | | Xavi Tamarit | AS-CO |  | Southampton FC | Southampton |