Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1999 |  | Raúl Iglesias | GK |  | CD Toledo | CD Toledo |
| 01/1999 | | Matxon | DF |  | Amurrio Club | Amurrio Club |
| 01/1999 | | Sarriegui | DF |  | Real Sociedad | Real Sociedad |
| 09/1998 | | Urrutia | MF |  | SD Eibar B | SD Eibar B |
| 07/1998 | | Aitor Iru | GK |  | UD Almería | Almería |
| 07/1998 | | Jon Ander | GK |  | Barakaldo CF | Barakaldo CF |
| 07/1998 | | Aitor Ocio | DF |  | CD Aurrerá de Vitoria | CD Aurrerá de Vitoria |
| 07/1998 | | Garmendia | DF | |||
| 07/1998 | | Gurrutxaga | DF | |||
| 07/1998 | | Guruceta | DF |  | CD Ourense | CD Ourense |
| 07/1998 | | Donosti | MF | | Barakaldo CF | Barakaldo CF |
| 07/1998 | | Gaizka Garitano | MF |  | Athletic Club B | Bilbao B |
| 07/1998 | | Golo | MF | |||
| 07/1998 | | Iturrino | MF |  | UD Salamanca | Salamanca |
| 07/1998 | | Kortina | MF |  | CA Osasuna | Osasuna |
| 07/1998 | | Aitor Agirre | FW | | Athletic Club B | Bilbao B |
| 07/1998 | | Cuéllar | FW |  | CD Leganés | Leganés |
| 07/1998 | | Sukia | FW |  | SD Beasain | SD Beasain |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1998 | | Yubero | GK |  | Rayo Vallecano | Rayo |
| 07/1998 | | Gartzen | DF |  | Levante UD | Levante |
| 07/1998 | | Jáuregui | DF | | Real Sociedad | Real Sociedad |
| 07/1998 | | Martínez | DF |  | AD Ceuta | ADA Ceuta |
| 07/1998 | | Sukunza | DF |  | Cultural Leonesa | CD Leonesa |
| 07/1998 | | Kortina | MF | | CD Ourense | CD Ourense |
| 07/1998 | | Kali Garrido | FW | | Levante UD | Levante |
| 07/1998 | | Loroño | FW |  | SD Gernika | Gernika |