Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2005 |  | Mark Iuliano | DF |  | Juventus | Juventus |
| 01/2005 |  | Bernardo Romeo | FW |  | Hamburger SV | Hamburg |
| 01/2005 |  | Mikhail Bagaev | MF | |||
| 01/2005 |  | Gonzalo de los Santos | MF |  | Valencia CF | Valencia |
| 01/2005 |  | Felipe Melo | MF |  | Grêmio Porto Alegre | Grêmio |
| 01/2005 |  | Yoshito Okubo | FW |  | Cerezo Osaka | Cerezo |
| 11/2004 |  | Víctor Casadesús | FW |  | RCD Mallorca B | Mallorca |
| 11/2004 | | Héctor Cúper | MA | |||
| 10/2004 | | Carmona | MF | | RCD Mallorca B | Mallorca |
| 10/2004 | | Llompart | MA | |||
| 08/2004 | | Ballesteros | DF |  | Villarreal CF | Villarreal |
| 07/2004 | | Alberto Cifuentes | GK |  | Ciudad de Murcia | Ciudad de Murcia |
| 07/2004 | | Moyá | GK | | RCD Mallorca B | Mallorca |
| 07/2004 |  | Sander Westerveld | GK |  | Real Sociedad | Real Sociedad |
| 07/2004 |  | Patrick Müller | DF |  | Olympique Lyonnais | Lyonnais |
| 07/2004 | | Xisco Campos | DF | | RCD Mallorca B | Mallorca |
| 07/2004 |  | Juan Arango | MF |  | Puebla FC | Puebla |
| 07/2004 | | Farinós | MF |  | Inter | Inter |
| 07/2004 | | Jorge López | MF | | Valencia CF | Valencia |
| 07/2004 | | Luis García | MF |  | Real Murcia | Murcia |
| 07/2004 | | Marcos Vales | MF |  | Sevilla FC | Sevilla |
| 07/2004 | | Luciano Becchio | FW | | RCD Mallorca B | Mallorca |
| 07/2004 | | Tuni | FW |  | UD Salamanca | Salamanca |
| 07/2004 | | Benito Floro | MA |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2005 |  | Andrija Delibašić | FW |  | SL Benfica | Benfica |
| 01/2005 | | Luciano Becchio | FW | | Ciudad de Murcia | Ciudad de Murcia |
| 01/2005 | | Patrick Müller | DF |  | FC Basel 1893 | FC Basel |
| 01/2005 | | Perera | FW |  | Celta de Vigo | Celta de Vigo |
| 09/2004 | | Arnold Bruggink | MF |  | Sc Heerenveen | Heerenveen |
| 07/2004 | | Leo Franco | GK |  | Atlético Madrid | Atlético |
| 07/2004 | | Miki | GK | | Ciudad de Murcia | Ciudad de Murcia |
| 07/2004 | | Edu Moya | DF |  | CD Tenerife | Tenerife |
| 07/2004 | | Federico Lussenhoff | DF |  | Cruz Azul | Cruz Azul |
| 07/2004 | | Colsa | MF | | Atlético Madrid | Atlético |
| 07/2004 | | Nagore | MF | | Celta de Vigo | Celta de Vigo |
| 07/2004 | | Nenê | MF |  | CD Alavés | Alavés |
| 07/2004 |  | Jovan Stanković | MF |  | Lleida CF | Lleida |
| 07/2004 | | Vicente | MF |  | Girona FC | Girona |
| 07/2004 |  | Samuel Eto'o | FW |  | FC Barcelona | Barcelona |
| 07/2004 | | Luis Aragonés | MA |  | Spain | Spain |