Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 07.07.2016 | Álex Remiro | Athletic Club | Levante | Loan |
| 02.07.2016 | Iñigo Baqué | Athletic Club | — | Loan |
| 02.07.2016 | Óscar Gil | Athletic Club | Oviedo | Loan |
| 01.07.2016 | Javi Alonso | Athletic Club | — | N/A |
| 01.07.2016 | Unai Bustinza | Leganes | Athletic Club | N/A |
| 01.07.2016 | Jonás Ramalho | Athletic Club | Girona | Free |
| 01.07.2016 | Markel Areitio | Athletic Club | — | N/A |
| 01.07.2016 | Urtzi Iriondo | Athletic Club | Elche | Loan |
| 01.07.2016 | Andoni Pérez | Athletic Club | — | € Free |
| 01.07.2016 | Gorka Pérez | — | Athletic Club | N/A |
| 01.07.2016 | Jon Aurtenetxe | — | Athletic Club | N/A |
| 01.07.2016 | Markel Etxeberría | Athletic Club | Valladolid | Loan |
| 01.07.2016 | Guillermo Fernández | Leganes | Athletic Club | N/A |
| 01.07.2016 | Kepa | Valladolid | Athletic Club | N/A |
| 01.06.2016 | Kike Sola | — | Athletic Club | N/A |
| 22.01.2016 | Dopi | — | Athletic Club | N/A |
| 15.01.2016 | Kike Sola | Athletic Club | — | Loan |
| 01.01.2016 | Jon Agirrezabala | Athletic Club | — | Loan |
| 30.12.2015 | A. Pascual | — | Athletic Club | Transfer |
| 02.09.2015 | Ander Alday Valverde | Athletic Club | — | Loan |
| 31.08.2015 | Raúl García | Atletico Madrid | Athletic Club | N/A |
| 17.08.2015 | Gorka Pérez | Athletic Club | — | Loan |
| 13.08.2015 | Jon Aurtenetxe | Athletic Club | — | Loan |
| 13.08.2015 | Guillermo Fernández | Athletic Club | Leganes | Loan |
| 11.08.2015 | Ruíz de Galarreta | Athletic Club | Leganes | Loan |
| 24.07.2015 | Mikel Juaristi Ariznabarreta | Athletic Club | — | N/A |
| 23.07.2015 | Erik Morán | Athletic Club | — | Loan |
| 20.07.2015 | Kepa | Athletic Club | Valladolid | Loan |
| 14.07.2015 | Gaizka Toquero Pinedo | Athletic Club | Alaves | Free |
| 12.07.2015 | Unai Albizua | Athletic Club | Leganes | Free |
| 08.07.2015 | Unai Bustinza | Athletic Club | Leganes | Loan |
| 07.07.2015 | Ander Artabe | Athletic Club | Levante | N/A |
| 01.07.2015 | Julen Arellano Sandúa | Barcelona | Athletic Club | N/A |
| 01.07.2015 | Eneko Bóveda Altube | — | Athletic Club | Free |
| 01.07.2015 | Gorka Elustondo Urkola | Real Sociedad | Athletic Club | Free |
| 01.07.2015 | Jonás Ramalho | Girona | Athletic Club | N/A |
| 01.07.2015 | Eraso | Leganes | Athletic Club | Free |
| 01.07.2015 | Ander Artabe | — | Athletic Club | N/A |
| 01.07.2015 | de Eguino | Athletic Club | — | N/A |
| 01.07.2015 | Izaro Abella | — | Athletic Club | N/A |
| 01.07.2015 | Iker Guarrotxena | — | Athletic Club | N/A |
| 29.01.2015 | Erik Morán | Athletic Club | Leganes | Loan |
| 28.01.2015 | Mario Barco | Athletic Club | — | € Free |
| 16.01.2015 | Jon Ander Felipe | — | Athletic Club | N/A |
| 06.01.2015 | Kepa | Athletic Club | — | Loan |
| 27.08.2014 | Igor Arnáez | Athletic Club | — | Free |
| 21.08.2014 | Ander Artabe | Athletic Club | — | Loan |
| 21.08.2014 | Jonan Amelibia | Athletic Club | — | Loan |
| 21.08.2014 | Y. Rahmani | Athletic Club | — | Loan |
| 12.08.2014 | Ruíz de Galarreta | Athletic Club | — | Loan |