Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 31.08.2023 | Javi Martón | Athletic Club | — | Loan |
| 23.08.2023 | Jon Morcillo | Athletic Club | — | Loan |
| 15.08.2023 | Capa | Athletic Club | Levante | Free |
| 10.08.2023 | Nico Serrano | Athletic Club | PEC Zwolle | Loan |
| 05.08.2023 | Unai Vencedor | Athletic Club | — | Loan |
| 25.07.2023 | Juan Artola | Athletic Club | — | Loan |
| 24.07.2023 | Alex Petxarroman | Athletic Club | — | Free |
| 11.07.2023 | Ibon Ispizua | Athletic Club | — | N/A |
| 10.07.2023 | Balenziaga | Athletic Club | — | Free |
| 05.07.2023 | Íñigo Martínez | Athletic Club | Barcelona | Free |
| 03.07.2023 | Ander Iru | Athletic Club | — | Free |
| 01.07.2023 | Oier Zarraga | Athletic Club | Udinese | Free |
| 30.01.2023 | Asier Villalibre | Athletic Club | Alaves | Loan |
| 26.08.2022 | Peru Nolaskoain | Athletic Club | — | Loan |
| 11.08.2022 | Nico Serrano | Athletic Club | — | Loan |
| 10.08.2022 | Alex Petxarroman | Athletic Club | — | Loan |
| 22.07.2022 | Iñigo Córdoba | Athletic Club | Fortuna Sittard | Free |
| 20.07.2022 | Unai Núñez | Athletic Club | Celta Vigo | Loan |
| 14.07.2022 | Iñigo Vicente | Athletic Club | — | Free |
| 14.07.2022 | Beñat Prados | Athletic Club | — | Loan |
| 14.07.2022 | Imanol García de Albéniz | Athletic Club | — | Loan |
| 08.07.2022 | Antxón Jaso | Athletic Club | — | N/A |
| 07.07.2022 | Juan Artola | Athletic Club | — | Loan |
| 05.07.2022 | Jokin Ezkieta | Athletic Club | — | N/A |
| 01.07.2022 | Unai López | Athletic Club | Rayo Vallecano | N/A |
| 10.03.2022 | Ibai Gómez | Athletic Club | — | Free |
| 21.01.2022 | Peru Nolaskoain | Athletic Club | — | Loan |
| 04.01.2022 | Jon Morcillo | Athletic Club | Valladolid | Loan |
| 11.09.2021 | Iago Herrerín | Athletic Club | — | Free |
| 31.08.2021 | Iñigo Córdoba | Athletic Club | GO Ahead Eagles | Loan |
| 31.08.2021 | Unai López | Athletic Club | Rayo Vallecano | Loan |
| 24.08.2021 | K. Kodro | Athletic Club | — | Free |
| 01.07.2021 | Jesús Areso | Athletic Club | Osasuna | Free |
| 01.07.2021 | Iñigo Baqué | Athletic Club | — | N/A |
| 01.07.2021 | Aitor Seguín | Athletic Club | — | Free |
| 01.07.2021 | C. Atangana | Athletic Club | — | Free |
| 01.07.2021 | Iñigo Vicente | Athletic Club | — | Loan |
| 01.02.2021 | Iñigo Córdoba | Athletic Club | Alaves | Loan |
| 28.01.2021 | K. Kodro | Athletic Club | Valladolid | Loan |
| 01.12.2020 | Beñat | Athletic Club | — | Free |
| 02.10.2020 | Gaizka Larrazabal | Athletic Club | — | Free |
| 21.09.2020 | Jon Sillero | Athletic Club | — | Loan |
| 21.09.2020 | Mikel San José Domínguez | Athletic Club | — | Free |
| 01.09.2020 | Andoni López | Athletic Club | — | N/A |
| 01.09.2020 | Gorka Guruzeta | Athletic Club | — | N/A |
| 14.08.2020 | C. Ganea | Athletic Club | Aris Thessalonikis | Free |
| 12.08.2020 | Dani Vivian | Athletic Club | — | Loan |
| 05.08.2020 | Hodei Oleaga | Athletic Club | — | € Free |
| 04.08.2020 | C. Atangana | Athletic Club | — | Loan |
| 01.06.2020 | Jefferson Luís | Athletic Club | — | — |