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| Transfers |
 Jong Sparta < > SC Heerenveen |
| FDK | < | Billy VAN DUIJL | CB | NED | 51 | 93 | 04/10/05 (18) | 94 | | | SC Heerenveen | | 1210 | | | | 0 | 0 | 945 | 0 | Y | (t.1, Jong Sparta) |
 Adana Demirspor < > SC Heerenveen |
| NQH | < | Cihan ÇANAK | AM/W | TUR | 56 | 94 | 24/01/05 (19) | 89 | 1.75 | 65 | SC Heerenveen | | 2350 | | | | 1 | 0 | 2665 | 0 | Y | (t.1, Adana Demirspor) |
 FC Salzburg 21,500,000 < >  Lille |
| RIH | > | Xaver SCHLAGER | CM | AUT | 65 | 85 | 28/09/97 (26) | 92 | 1.84 | 73 | Lille | | 21700 | | | | 0 | 0 | 5315 | 0 | +4 | |
| FVP | > | Stefan POSCH | CB | AUT | 64 | 96 | 14/05/97 (26) | 90 | 1.84 | 73 | Lille | | 19080 | | | | 0 | 0 | 3125 | 0 | +4 | |
| GBM | > | Leandro MORGALLA | CB | GER | 49 | 97 | 13/09/04 (19) | 90 | | | Lille | | 810 | | | | 0 | 0 | 640 | 0 | Y | |
| KLH | > | Amar DEDIC | RB | BIH | 62 | 96 | 18/08/02 (21) | 87 | 1.80 | 67 | Lille | | 12660 | | | | 0 | 0 | 3610 | 0 | +4 | |
| LNB | < | Miguel Ângelo da Silva Rocha, XEKA | CM | POR | 63 | 15 | 10/11/94 (29) | 89 | 1.86 | 80 | FC Salzburg | | | | | | | | 3275 | | | |
| DWT | < | Akim ZEDADKA | RB | ALG | 59 | 15 | 30/05/95 (28) | 94 | 1.73 | 72 | FC Salzburg | | | | | | | | 1315 | | | |
 Genoa 45,000,000 < > Lille |
| EGK | > | Joe GOMEZ | CB/RB | ENG | 64 | 98 | 23/05/97 (26) | 85 | 1.85 | 77 | Lille | 6.78 | 18780 | | | | 0 | 0 | 3125 | 0 | +4 | |
| FJB | > | Maxime ESTÈVE | CB | FRA | 62 | 95 | 26/05/02 (21) | 81 | 1.93 | 87 | Lille | | 11560 | | | | 0 | 0 | 3610 | 0 | +4 | |
| MBY | > | Luca PELLEGRINI | LB/LM | ITA | 62 | 93 | 07/03/99 (25) | 86 | 1.78 | 72 | Lille | | 10960 | | | | 2 | 0 | 2480 | 0 | +4 | |
| TNC | > | Nicolò ROVELLA | DM | ITA | 64 | 94 | 04/12/01 (22) | 83 | | | Lille | | 17480 | | | | 0 | 0 | 4355 | 0 | +4 | |
| AAF | > | Lovro ZVONAREK | AM | CRO | 43/52 | 92 | 08/05/05 (18) | 62 | | | Lille | | 1310 | | | | 0 | 0 | 1620 | 0 | Y | |
| VKF | > | RODRIGO Duarte RIBEIRO | St | POR | 52 | 95 | 28/04/05 (18) | 88 | 1.85 | 72 | Lille | | 1440 | | | | 2 | 0 | 1885 | 0 | Y | |
| SC Freiburg 6,500,000 < > Lens |
| UMG | > | Alban LAFONT | Gk | FRA | 64 | 89 | 23/01/99 (25) | 93 | 1.93 | 80 | Lens | | 18580 | | | | 0 | 0 | 3780 | 0 | +4 | |
| 2,000,000 < > Lens |
| EBH | > | Koni DE WINTER | FB/WB | BEL | 61 | 83 | 12/06/02 (21) | 93 | | | Lens | | 10520 | | | | 0 | 0 | 3130 | 0 | +4 | |
Galatasaray < >  IFK Göteborg |
| PMT | < | Simon ADINGRA | LW | CIV | 63 | 96 | 01/01/02 (22) | 84 | 1.75 | 68 | IFK Göteborg | | 5150 | | | | 0 | 0 | 5580 | 0 | +3 | (t.26, Galatasaray) |
| Anadia < > 1,550,000 Lazio |
| AXT | < | Marcus Vinícius Oliveira Alencar, MARQUINHOS | W | BRA | 50/52 | 14 | 07/04/03 (20) | 76 | 1.75 | 70 | Anadia | | | | | | | | 1365 | | | |
 Rangers < > 15,000,000 Arsenal |
| SVF | < | Folarin BALOGUN | CS | USA | 63 | 89 | 03/06/01 (22) | 87 | | | Rangers | | 16240 | | | | 0 | 0 | 6510 | 0 | +2 | |
| 1,750,000 < > SV Werder Bremen |
| GST | > | Lewis DOBBIN | WS | ENG | 51 | 81 | 03/01/03 (21) | 89 | | | SV Werder Bremen | | 2130 | | | | 0 | 0 | 1240 | 0 | +4 | |
| 1,150,000 < > SV Werder Bremen |
| MGH | > | Alfie GILCHRIST | CB | ENG | 45 | 82 | 28/11/03 (20) | 91 | | | SV Werder Bremen | | 460 | | | | 0 | 0 | 295 | 0 | Y | |
1.FC Nürnberg 7,500,000 < >  Zaragoza |
| IMJ | > | CAN Uzun | LM | TUR | 45 | 81 | 11/11/05 (18) | 89 | | | Zaragoza | | 440 | | | | 0 | 0 | 575 | 0 | Y | |
| Trabzonspor 1,150,000 < > Zaragoza |
| TQF | > | AHMETCAN Kaplan | CB | TUR | 52 | 94 | 16/01/03 (21) | 90 | | | Zaragoza | | 2580 | | | | 0 | 0 | 830 | 0 | +4 | |
| SC Freiburg 7,500,000 < > Zaragoza |
| TTG | > | Noah ATUBOLU | Gk | GER | 61 | 88 | 25/05/02 (21) | 90 | 1.90 | 78 | Zaragoza | | 9980 | | | | 0 | 0 | 3400 | 0 | +4 | |
| 875,000 < > Deportivo |
| SGQ | > | Kassoum OUATTARA | LB | FRA | 55 | 91 | 14/10/04 (19) | 89 | | | Deportivo | | 2070 | | | | 0 | 0 | 1570 | 0 | Y | |
| Warrington Town < > Rangers |
| MMG | < | Jamie DONLEY | CS/AM | ENG | 39 | 94 | 03/01/05 (19) | 95 | | | Rangers | | 190 | | | | 3 | 0 | 235 | 0 | Y | (t.1, Warrington Town) |
| Ipswich Town < > Rangers |
| UOY | < | Robbie URE | CS | SCO | 41 | 90 | 26/02/04 (20) | 90 | | | Rangers | | 260 | | | | 0 | 0 | 295 | 0 | Y | (t.1, Ipswich Town) |
| Eintr. Frankfurt 3,100,000 < > Aston Villa |
| MXN | > | Diant RAMAJ | Gk | GER | 58 | 69 | 19/09/01 (22) | 85 | 1.86 | 80 | Aston Villa | | 6020 | | | | 0 | 0 | 2070 | 0 | +4 | |
| Girona 3,000,000 < > Benfica |
| BNH | > | YAN Bueno COUTO | RB | BRA | 62 | 97 | 03/06/02 (21) | 91 | 1.68 | 60 | Benfica | | 12860 | | | | 0 | 0 | 3610 | 0 | +4 | |
| DWU | < | VANDERSON de Oliveira Campos | RWB | BRA | 64 | 15 | 21/06/01 (22) | 90 | | | Girona | | | | | | | | 4355 | | | |
| Athletic Bilbao 2,000,000 < > Benfica |
| EPB | > | Daniel VIVIAN Moreno | CB | ESP | 64 | 99 | 05/07/99 (24) | 92 | 1.83 | 82 | Benfica | 7.11 | 18480 | | | | 8 | 1 | 3490 | 0 | +4 | |
| DOR | < | DIEGO López Noguerol | LW/St | ESP | 62 | 94 | 13/05/02 (21) | 89 | | | Athletic Bilbao | | 9340 | | | | 0 | 0 | 3995 | 0 | | |
 OB 4,500,000 < > Benfica |
| EIG | > | Yankuba MINTEH | W | GAM | 56 | 86 | 22/07/04 (19) | 91 | | | Benfica | | 2570 | | | | 0 | 0 | 2665 | 0 | Y | |
| Dundee United 650,000 < > Feyenoord |
| KJF | > | Archie MEEKISON | AM/W | SCO | 46 | 75 | 04/05/02 (21) | 92 | 1.80 | 67 | Feyenoord | | 1120 | | | | 0 | 0 | 490 | 0 | | |
| Milan < > 2,010,000 Feyenoord |
| AKR | < | Jordy CLASIE | CM/DM | NED | 63 | 93 | 27/06/91 (32) | 89 | 1.69 | 68 | Milan | | 15840 | | | | 1 | 0 | 2170 | 1 | +2 | |
| Barcelona 5,000,000 < > Liverpool |
| IQL | > | DANILO Luiz da Silva | WB | BRA | 67 | 99 | 15/07/91 (32) | 88 | 1.84 | 65 | Liverpool | 7.32 | 37060 | | | | 1 | 0 | 2660 | 2 | +4 | |
| APM | < | Tariq LAMPTEY | RWB/RW | GHA | 62 | 93 | 30/09/00 (23) | 84 | 1.64 | 55 | Barcelona | | 11560 | | | | 1 | 0 | 2950 | 0 | | |
| KVA | < | JORDI ALBA Ramos | LWB | ESP | 64 | 95 | 21/03/89 (34) | 80 | 1.70 | 69 | Barcelona | | 16280 | | | | 3 | 0 | 735 | 0 | | |
| Juventus 3,000,000 < > Liverpool |
| OYN | > | Kieran TRIPPIER | RWB | ENG | 68 | 97 | 19/09/90 (33) | 88 | 1.77 | 69 | Liverpool | 7.37 | 44140 | | | | 2 | 1 | 2220 | 4 | +4 | |
| MXP | < | Wilfried Stephane SINGO | RWB | CIV | 64 | 95 | 25/12/00 (23) | 86 | | | Juventus | | 17680 | | | | 3 | 0 | 3925 | 0 | | |
| 1,300,000 < > Karlsruher SC |
| HII | > | Bohdan MYKHAYLICHENKO | LB | UKR | 61 | 94 | 21/03/97 (26) | 87 | 1.75 | 70 | Karlsruher SC | | 8730 | | | | 0 | 0 | 2020 | 0 | | |
| 520,000 < > Karlsruher SC |
| WGI | > | Leon DAJAKU | St | GER | 50 | 83 | 12/04/01 (22) | 88 | 1.80 | 72 | Karlsruher SC | | 1760 | | | | 0 | 0 | 960 | 0 | | |
| Bayern München II 5,200,000 < > Kaiserslautern |
| QUW | > | JEONG Woo-yeong | W/AM | KOR | 62 | 97 | 20/09/99 (24) | 91 | 1.79 | 72 | Kaiserslautern | | 11360 | | | | 0 | 0 | 3855 | 1 | +1 | |
| 520,000 < > Parma |
| OOW | > | Vito MANNONE | Gk | ITA | 61 | 85 | 02/03/88 (36) | 91 | 1.83 | 73 | Parma | | 10220 | | | | 0 | 0 | 850 | 0 | +1 | |
| Loan/transfer listed |
| LQD | - | Lukas KLÜNTER | RWB | GER | 54 | 94 | 26/05/96 (27) | 84 | 1.84 | 73 | SV Werder Bremen | | 3350 | | | T | 1 | 0 | 645 | 0 | | |
| BEY | - | Jean-Manuel MBOM | CM | GER | 58 | 97 | 24/02/00 (24) | 87 | 1.79 | 75 | SV Werder Bremen | | 6410 | | | T | 1 | 0 | 2140 | 0 | | |
| BMK | - | Felix AGU | RB | GER | 58 | 94 | 27/09/99 (24) | 95 | 1.80 | 66 | SV Werder Bremen | 7.07 | 6230 | | | T | 1 | 0 | 1455 | 1 | | |
| UPM | - | Kevin MÖHWALD | AM | GER | 55 | 93 | 03/07/93 (30) | 84 | 1.83 | 77 | SV Werder Bremen | | 3530 | | | T | 0 | 0 | 895 | 0 | | |
| QGC | - | Robin OLSEN | Gk | SWE | 59 | 95 | 08/01/90 (34) | 90 | 1.98 | 86 | Aston Villa | 7.06 | 7020 | | | T | 0 | 0 | 890 | 0 | | |
| IFX | - | Bertrand TRAORÉ | RW | BFA | 61 | 32 | 06/09/95 (28) | 91 | 1.80 | 72 | Aston Villa | 7.06 | 9550 | | | T | 0 | 1 | 2615 | 2 | +2 | |
| Released |
| KFU | 16 | Tim KRUL | Gk | NED | 58 | 12 | 03/04/88 (35) | 90 | 1.90 | 75 | Luton Town | | | | | | | | 695 | | | |
| FDS | 16 | Michael LANGER | Gk | AUT | 54 | 6 | 06/01/85 (39) | 96 | 1.93 | 87 | KFC Uerdingen 05 | | | | | | | | F/t | | | |
| CEA | 16 | Nathan BISHOP | Gk | ENG | 48 | 12 | 15/10/99 (24) | 94 | 1.85 | 72 | Sunderland | | | | | | | | 375 | | | |
| Loan callbacks |
| BIY | - | Oscar GLOUKH | AM | ISR | 59/60 | 94 | 01/04/04 (19) | 79 | 1.72 | 67 | SC Heerenveen | | 3650 | | | | 0 | 0 | 4750 | 0 | Y | |
