Athletic Club
Spain Edin Terzić | Coach |  Germany | 43 | |||
 Unai Simón | GK |  Spain | 1 | 29 | €21M | |
 Álex Padilla | GK |  Mexico | 13 | 23 | ||
 Jesús Areso | RB | Spain | 12 | 27 | €5M | |
 Hugo Rincón | RB | Spain | 15 | 23 | €4.1M | |
 Unai EguiluzCruciate ligament injury - Mid January 2027 | CB | Spain | 24 | €590K | ||
 Daniel Vivian | CB, RB | Spain | 3 | 27 | €24M | |
 Aitor Paredes | CB | Spain | 4 | 26 | €12M | |
 Yeray Álvarez | CB | Spain | 5 | 31 | €980K | |
 Aymeric Laporte | CB | Spain | 14 | 32 | €7.5M | |
 Yuri Berchiche | LB, CB | Spain | 17 | 36 | €1.1M | |
 Johaneko Louis-Jean | LB |  France | 31 | 22 | €160K | |
 Beñat Prados | DM | Spain | 6 | 25 | €17M | |
 Iñigo Ruiz de GalarretaHamstring injury - Doubtful | DM | Spain | 16 | 33 | €1.5M | |
 Mikel Jauregizar | DM | Spain | 18 | 22 | €36M | |
 Alejandro Rego | DM | Spain | 20 | 23 | €5.2M | |
 Beñat Gerenabarrena | CM, DM, RB | Spain | 24 | 23 | €1.1M | |
 Oihan Sancet | AM | Spain | 8 | 26 | €31M | |
 Peio Canales | AM, DM | Spain | 28 | 21 | €5.7M | |
 Álvaro Djaló | RW, AM, RM, LM |  Guinea-Bissau | 25 | 27 | €3.3M | |
 Alex Berenguer | RW, LW, AM | Spain | 7 | 31 | €2.2M | |
 Iñaki Williams | RW, ST, LW |  Ghana | 9 | 32 | €11M | |
 Nico Serrano | RW | Spain | 22 | 23 | €1.5M | |
 Nico Williams | LW | Spain | 10 | 24 | €67M | |
 Robert Navarro | LW, RW, AM | Spain | 23 | 24 | €7.5M | |
 Gorka GuruzetaCruciate ligament injury - Out for season | ST, AM | Spain | 11 | 30 | €5M | |
 Maroan Sannadi | ST |  Morocco | 21 | 25 | €2.9M |