Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/1999 |  | Manolo Pérez | MF |  | RCD Espanyol | RCD Espanyol |
| 07/1999 | | César Quesada | GK |  | Recreativo Huelva | Recreativo |
| 07/1999 | | Óscar Benito | GK |  | CF Fuenlabrada | Fuenlabrada |
| 07/1999 | | Aranalde | DF |  | Albacete | Albacete |
| 07/1999 |  | Boban Babunski | DF |  | AEK Athen | AEK Athen |
| 07/1999 | | Herrera | DF |  | UD Las Palmas | UD Las Palmas |
| 07/1999 | | Loza | DF |  | SD Noja | SD Noja |
| 07/1999 | | Altuna | MF | |||
| 07/1999 | | Ángel Luis | MF |  | Villarreal CF | Villarreal |
| 07/1999 |  | Edu Manga | MF |  | Universidad Católica | U. Católica |
| 07/1999 |  | Željko Kalajdžić | MF | | Villarreal CF | Villarreal |
| 07/1999 |  | Viktorio Pavlov | MF |  | Levski Sofia | Levski |
| 07/1999 | | Pepelu | MF | | Recreativo Huelva | Recreativo |
| 07/1999 | | Arenaza | FW |  | SD Eibar | Eibar |
| 07/1999 | | Borja | FW |  | Universidad Las Palmas | Universidad Las Palmas |
| 07/1999 | | Molist | FW |  | Neuchâtel Xamax FCS | Xamax |
| 07/1999 | | Quico Rey | FW | | SD Eibar | Eibar |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2000 | | Viktorio Pavlov | MF | | Levski Sofia | Levski |
| 01/2000 | | Manel | FW | | RCD Espanyol | RCD Espanyol |
| 07/1999 | | Aizkorreta | GK |  | CF Extremadura | CF Extremadura |
| 07/1999 | | Jauregi | GK |  | Racing Ferrol | Racing Ferrol |
| 07/1999 | | Clotet | DF |  | Rayo Vallecano | Rayo |
| 07/1999 |  | Gustavo Falaschi | DF |  | Racing Club | Racing Club |
| 07/1999 | | Jubera | DF |  | Granada CF | Granada CF |
| 07/1999 | | Redondo | DF |  | Elche CF | Elche CF |
| 07/1999 | | Cassiano | MF |  | São Paulo FC | São Paulo FC |
| 07/1999 | | Colsa | MF |  | Racing Santander | Racing |
| 07/1999 | | Ino | MF | | Elche CF | Elche CF |
| 07/1999 | | Jorge López | MF | | Villarreal CF | Villarreal |
| 07/1999 | | Leonardo Iglesias | FW |  | Villa Española | Española |
| 07/1999 | | Ismael | FW | | Granada CF | Granada CF |
| 07/1999 | | Luis Gil | FW |  | Real Murcia | Murcia |