Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1998 |  | Zubizarreta | DF | |||
| 07/1998 | | Esparza | MF |  | Athletic Club U19 | Bilbao U19 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1998 | | Aranzubía | GK |  | Athletic Club B | Bilbao B |
| 07/1998 | | José Carlos | GK |  | Zalla UC | Zalla UC |
| 07/1998 | | Alvaro Martínez | DF | | Athletic Club B | Bilbao B |
| 07/1998 | | Andrés | MF |  | Barakaldo CF | Barakaldo CF |
| 07/1998 | | Zenekorta | MF | | Athletic Club B | Bilbao B |
| 07/1998 | | David Karanka | FW | | Athletic Club B | Bilbao B |