Athletic Club U19SpanienFußball(M)
Transfers - Zugänge
| ab | Name | Pos | Mannschaft | Team | ||
|---|---|---|---|---|---|---|
| 09/2025 |  | Christian Imga | ST |  | Athletic Club U17 | U17 |
| 07/2025 | | Tasio | TW |  | Athletic Club B | Bilbao B |
| 07/2025 | | Aitor León | AB | | Athletic Club U17 | U17 |
| 07/2025 | | Álex Torres | AB | | Athletic Club U17 | U17 |
| 07/2025 | | Beñat Larrea | AB | | Athletic Club B | Bilbao B |
| 07/2025 | | Danel | AB | |||
| 07/2025 | | Ibai | AB | | Athletic Club U17 | U17 |
| 07/2025 | | Mikel | AB | | Athletic Club B | Bilbao B |
| 07/2025 | | Rubén | AB |  | Athletic Club U18 | U18 |
| 07/2025 | | Adrián | MF | | Athletic Club U17 | U17 |
| 07/2025 | | Enzo | MF | | Athletic Club U17 | U17 |
| 07/2025 | | Oihan Encinas | MF | | Athletic Club U17 | U17 |
| 07/2025 | | Pablo Iturria | MF |  | CD Oberena | CD Oberena |
| 07/2025 | | Peio Huestamendia | MF | | Athletic Club B | Bilbao B |
| 07/2025 | | Unax | MF | | Athletic Club B | Bilbao B |
| 07/2025 | | Andrés | ST | | Athletic Club U17 | U17 |
| 07/2025 | | Asier Torres | ST | | Athletic Club U17 | U17 |
| 07/2025 | | Beñat | ST |  | Antiguoko KE U17 | U17 |
| 07/2025 | | Danel Narbarte | ST | | Athletic Club U17 | U17 |
| 07/2025 | | Elijah Gift | ST | | Athletic Club B | Bilbao B |
| 07/2025 | | Bittor Llopis | TR |  | CD Basconia | CD Basconia |
Transfers - Abgänge
| ab | Name | Pos | Mannschaft | Team | ||
|---|---|---|---|---|---|---|
| 01/2026 | | Manex Lozano | ST |  | Racing Santander | Racing |
| 07/2025 | | Eneko Ellakuria | MF | | CD Basconia | CD Basconia |
| 07/2025 | | Marcos Goñi | ST | | CD Basconia | CD Basconia |
