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| Transfers |
 Liverpool 6,000,000 < >  Lyon |
| DGR | > | Jules KOUNDÉ | CB/RB | FRA | 69 | 97 | 12/11/98 (26) | 92 | 1.78 | 70 | Lyon | 7.12 | 52580 | | | | 3 | 2 | 6310 | 3 | +4 | |
| OVZ | < | Stefan DE VRIJ | CB | NED | 67 | 94 | 05/02/92 (32) | 94 | 1.89 | 75 | Liverpool | 6.90 | 35460 | | | | 2 | 0 | 2660 | 1 | | |
| ESC | < | Stefan SAVIC | CB | MNE | 67 | 93 | 08/01/91 (33) | 89 | 1.88 | 73 | Liverpool | | 34860 | | | | 3 | 0 | 1915 | 0 | | |
2,000,000 < >  Athletic Bilbao |
| ISY | > | Enrique Jesús Salas Valiente, KIKE SALAS | CB | ESP | 61 | 77 | 23/04/02 (22) | 92 | 1.88 | 80 | Athletic Bilbao | | 10420 | | | | 0 | 0 | 2840 | 0 | | |
| 2,200,000 < > Athletic Bilbao |
| DGB | < | AITOR PAREDES Casamichana | CB | ESP | 63 | 82 | 29/04/00 (24) | 94 | 1.85 | 74 | Athletic Bilbao | | 14140 | | | | 0 | 0 | 3025 | 0 | | |
| 3,000,000 < > Athletic Bilbao |
| DNY | > | Francisco Pérez Martínez, FRAN PÉREZ | W | ESP | 62 | 85 | 09/09/02 (22) | 90 | 1.75 | 68 | Athletic Bilbao | | 10960 | | | | 0 | 0 | 4830 | 0 | | |
1,000,000 < >  Hajduk Split |
| UIL | > | Marin SOTICEK | RW | CRO | 54 | 95 | 18/09/04 (20) | 91 | 1.83 | 75 | Hajduk Split | | 3090 | | | | 0 | 0 | 1830 | 0 | | |
 FC København 7,440,000 < >  Hertha BSC Berlin |
| XCI | > | Jonas Older WIND | St | DEN | 64 | 78 | 07/02/99 (25) | 90 | 1.86 | 76 | Hertha BSC Berlin | | 18680 | | | | 0 | 0 | 5680 | 0 | +1 | |
| Loan callbacks |
| VXM | 25+ | Lucas GOURNA-DOUATH | DM/CM | FRA | 62 | 90 | 05/08/03 (21) | 93 | 1.85 | 76 | Marseille | 7.38 | 9300 | | | | 0 | 0 | 3610 | 1 | | |
| XWK | 25+ | Désiré DOUÉ | LW/AM | FRA | 62 | 97 | 03/06/05 (19) | 94 | 1.81 | 72 | Marseille | 6.90 | 10620 | | | | 0 | 0 | 6325 | 10 | | |
| VXY | - | Cody Mathès GAKPO | W/St | NED | 65 | 98 | 07/05/99 (25) | 92 | 1.89 | 76 | Sporting Braga | 7.13 | 24200 | | | | 2 | 0 | 5625 | 14 | | |
| WAD | - | Éric GARCÍA Martret | CB | ESP | 65 | 99 | 09/01/01 (23) | 90 | 1.82 | 79 | Sporting Braga | 6.83 | 22000 | | | | 1 | 0 | 4520 | 0 | | |
| EEX | - | Vítor Machado Ferreira, VITINHA | CM/AM | POR | 66 | 97 | 13/02/00 (24) | 95 | 1.72 | 65 | Sporting Braga | 7.66 | 27520 | | | | 0 | 0 | 6850 | 1 | | |
| BRI | - | VITOR Hugo ROQUE Ferreira | St | BRA | 62 | 98 | 28/02/05 (19) | 93 | 1.72 | 76 | Sporting Braga | 6.32 | 5880 | | | | 3 | 0 | 7385 | 0 | Y | |
| IIF | - | NUNO Alexandre Tavares MENDES | LWB | POR | 64 | 96 | 19/06/02 (22) | 92 | 1.83 | 70 | Sporting Braga | 7.29 | 17880 | | | | 0 | 0 | 4355 | 1 | | |
