Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2019 |  | Mathías Olivera | DF |  | Albacete | Albacete |
| 01/2019 |  | Samu Sáiz | FW |  | Leeds United | Leeds Utd |
| 12/2018 |  | Mathieu Flamini | MF | |||
| 08/2018 | | Sebastián Cristóforo | MF |  | ACF Fiorentina | Fiorentina |
| 08/2018 | | Dimitri Foulquier | DF |  | Watford FC | Watford |
| 08/2018 | | Ignasi Miquel | DF |  | Málaga CF | Málaga |
| 07/2018 | | Iván Alejo | FW |  | SD Eibar | Eibar |
| 07/2018 |  | Nemanja Maksimović | MF |  | Valencia CF | Valencia |
| 07/2018 | | David Soria | GK |  | Sevilla FC | Sevilla |
| 07/2018 | | Lazo | MF |  | Real Madrid Castilla | RM Castilla |
| 07/2018 |  | Ayoub Abou | MF | |||
| 07/2018 |  | Leandro Chichizola | GK | |||
| 07/2018 | | Sergi Guardiola | MF |  | Córdoba CF | Córdoba |
| 07/2018 | | Jaime Mata | FW |  | Real Valladolid | Valladolid |
| 07/2018 | | Rubén Yáñez | GK |  | Cádiz CF | Cádiz |
| 07/2018 |  | Oswaldo Alanís | DF |  | Deportivo Guadalajara | CD Guadalajara |
| 07/2018 | | Rober Ibáñez | MF |  | CA Osasuna | Osasuna |
| 07/2018 | | Chuli | FW |  | CD Lugo | Lugo |
| 07/2018 | | Nacho Fernández | AS-CO |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2019 | | Iván Alejo | FW | | Málaga CF | Málaga |
| 01/2019 | | Rober Ibáñez | MF | | CA Osasuna | Osasuna |
| 08/2018 | | Oswaldo Alanís | DF |  | Real Oviedo | Oviedo |
| 08/2018 | | Barri | MF | | Albacete | Albacete |
| 08/2018 |  | Merveille Ndockyt | MF |  | RCD Mallorca | Mallorca |
| 08/2018 | | Álvaro Jiménez | MF |  | Sporting Gijón | Sporting Gijón |
| 08/2018 | | Dani Pacheco | FW | | Málaga CF | Málaga |
| 08/2018 | | Chuli | FW |  | CD Extremadura | CD Extremadura |
| 08/2018 | | Lazo | MF | | CD Lugo | Lugo |
| 08/2018 | | Fayçal Fajr | MF |  | SM Caen | SM Caen |
| 08/2018 | | Ayoub Abou | MF | | Real Madrid Castilla | RM Castilla |
| 07/2018 | | Filip Manojlović | GK |  | Panionios GSS | Panionios |
| 07/2018 | | Molinero | DF | | Sporting Gijón | Sporting Gijón |
| 07/2018 | | Carlos Calderón | MF | | CD Lugo | Lugo |
| 07/2018 |  | Gustavo Quezada | MF | | CD Lugo | Lugo |
| 07/2018 | | Guaita | GK |  | Crystal Palace | Cr. Palace |
| 07/2018 | | Emiliano Martínez | GK |  | Arsenal FC | Arsenal |
| 07/2018 | | Miguel Rubio | DF |  | Getafe CF B | Getafe B |
| 07/2018 | | Mathías Olivera | DF | | Albacete | Albacete |
| 07/2018 | | Loïc Rémy | FW |  | UD Las Palmas | UD Las Palmas |