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| Transfers |
1,500,000 < >  Kaiserslautern |
| IIQ | > | Abdukodir KHUSANOV | CB | UZB | 58 | 95 | 29/02/04 (20) | 88 | | | Kaiserslautern | | 3150 | | | | 0 | 0 | 2225 | 0 | Y | |
| 1,100,000 < > Kaiserslautern |
| KDO | > | Niccolň PISILLI | CM | ITA | 46 | 87 | 23/09/04 (20) | 91 | | | Kaiserslautern | | 550 | | | | 0 | 0 | 550 | 0 | Y | |
| 850,000 < > Kaiserslautern |
| ULS | > | Vitor de Oliveira Nunes dos Reis, VÍTOR REIS | CB | BRA | 53 | 96 | 12/01/06 (18) | 90 | | | Kaiserslautern | | 1480 | | | | 0 | 0 | 1270 | 0 | Y | |
Flamengo 5,000,000 < >  Anderlecht |
| SHU | > | Axel DISASI | CB | FRA | 65 | 95 | 11/03/98 (26) | 81 | 1.90 | 86 | Anderlecht | | 21400 | | | | 3 | 0 | 3605 | 0 | +4 | |
1,500,000 < >  Benfica |
| KQM | > | Pietro COMUZZO | CB | ITA | 48 | 92 | 20/02/05 (19) | 90 | | | Benfica | | 670 | | | | 0 | 0 | 545 | 0 | Y | |
| 2,300,000 < > Borussia Dortmund |
| JIB | > | Josha VAGNOMAN | FB | GER | 62 | 96 | 11/12/00 (23) | 94 | 1.87 | 86 | Borussia Dortmund | | 12860 | | | | 0 | 0 | 2950 | 0 | | |
| 4,000,000 < > Borussia Dortmund |
| KUP | > | Anthony ELANGA | W | SWE | 63 | 87 | 27/04/02 (22) | 91 | 1.78 | 65 | Borussia Dortmund | | 13340 | | | | 0 | 0 | 5580 | 0 | | |
| 3,400,000 < > Borussia Dortmund |
| JVO | > | Jakub KAMINSKI | LW | POL | 62 | 96 | 05/06/02 (22) | 91 | 1.79 | 68 | Borussia Dortmund | | 12960 | | | | 0 | 0 | 4830 | 0 | | |
2,200,000 < >  Wolves |
| OUF | > | Jack CLARKE | W | ENG | 60 | 90 | 23/11/00 (23) | 92 | 1.80 | 74 | Wolves | | 8380 | | | | 0 | 0 | 3245 | 0 | | |
| 2,200,000 < > Wolves |
| FVB | > | James McATEE | CM/AM | ENG | 60 | 87 | 18/10/02 (22) | 86 | | | Wolves | | 8630 | | | | 0 | 0 | 3620 | 0 | | |
| Loan callbacks |
| CHG | - | Youssoufa MOUKOKO | St/W | GER | 62 | 43 | 20/11/04 (19) | 80 | 1.75 | 74 | Deportivo | | 6190 | 2 | | | 0 | 0 | 7385 | 0 | Y | |
| FXF | 25+ | PAU PRIM Coma | DM | ESP | 46 | 88 | 22/02/06 (18) | 90 | | | Rangers | | 560 | | | | 0 | 0 | 440 | 0 | Y | |
| KRK | - | Roony BARDGHJI | RW/AM | SWE | 58 | 99 | 15/11/05 (18) | 83 | | | IFK Göteborg | | 3540 | | | | 0 | 0 | 3850 | 0 | Y | |
| LYA | 25+ | Óscar Andrés PEREA Abonce | LW | COL | 50 | 93 | 27/09/05 (19) | 90 | | | Rangers | | 1040 | | | | 0 | 0 | 1110 | 0 | Y | |
