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| Transfers |
 Vélez Sársfield < >  SC Heerenveen |
| CMS | < | Matías SOULÉ Malvano | RW/AM | ARG | 61 | 94 | 15/04/03 (21) | 90 | | | SC Heerenveen | | 10120 | | | | 0 | 0 | 4615 | 0 | +2 | (t.9, Vélez Sársfield) |
| Gimnasia (LP) < > SC Heerenveen |
| EZM | < | Claudio Jeremias ECHEVERRI | AM | ARG | 46/52 | 94 | 02/01/06 (18) | 69 | 1.71 | 62 | SC Heerenveen | | 520 | | | | 0 | 0 | 1620 | 0 | Y | (t.3, Gimnasia (LP)) |
 Intercity < >  Rangers |
| FXF | < | PAU PRIM Coma | DM | ESP | 37 | 93 | 22/02/06 (18) | 85 | | | Rangers | | 140 | | | | 0 | 0 | 70 | 0 | Y | (t.15, Intercity) |
 Lincoln City < > Rangers |
| YJI | < | Tobias SLOTSAGER | CB | DEN | 50 | 94 | 01/01/06 (18) | 85 | | | Rangers | | 910 | | | | 0 | 0 | 815 | 0 | Y | (t.3, Lincoln City) |
| 1,200,000 < > Rangers |
| YBG | > | Simone PAFUNDI | AM | ITA | 47 | 85 | 14/03/06 (18) | 91 | | | Rangers | | 650 | | | | 0 | 0 | 780 | 0 | Y | |
 Buducnost 1,000,000 < >  FC Basel |
| PEF | > | Vasilije ADZIC | AM | MNE | 46 | 82 | 12/05/06 (18) | 95 | | | FC Basel | | 500 | | | | 0 | 0 | 670 | 0 | Y | |
| 200,000 < > FC Basel |
| PCM | > | Tommaso MARTINELLI | Gk | ITA | 37 | 95 | 06/01/06 (18) | 86 | | | FC Basel | | 150 | | | | 0 | 0 | 85 | 0 | Y | |
| Wigan Athletic 1,000,000 < > FC Basel |
| YIG | > | Charlie HUGHES | CB | ENG | 50 | 97 | 16/10/03 (20) | 92 | | | FC Basel | | 880 | | | | 0 | 0 | 675 | 0 | Y | |
10,000,000 < >  Lille |
| VGH | > | Umut TOHUMCU | AM | GER | 59 | 88 | 11/08/04 (19) | 90 | 1.75 | 71 | Lille | | 3400 | | | | 0 | 0 | 4115 | 0 | Y | |
| 5,000,000 < > Lille |
| FJA | > | Yoram ZAGUE | RB | FRA | 40 | 91 | 15/05/06 (18) | 91 | | | Lille | | 220 | | | | 0 | 0 | 150 | 0 | Y | |
| Blackburn Rovers 25,000,000 < > Lille |
| QHU | < | Angel GOMES | AM | ENG | 63 | 39 | 31/08/00 (23) | 91 | 1.70 | 61 | Blackburn Rovers | 7.25 | 13140 | 23 | | | 0 | 0 | 5015 | 0 | | |
| PVJ | > | Curtis JONES | CM/AM | ENG | 64 | 95 | 30/01/01 (23) | 93 | | | Lille | 7.10 | 16980 | | | | 2 | 0 | 5790 | 1 | +4 | |
| Milan < > Arsenal |
| TOR | < | Rayan CHERKI | AM/RW | FRA | 59/62 | 94 | 17/08/03 (20) | 75 | 1.76 | 70 | Arsenal | | 13260 | | | | 0 | 0 | 5825 | 0 | +3 | (t.34, Milan) |
| Coventry City < > Lazio |
| JCU | < | Eddie NKETIAH | CS | ENG | 60/63 | 93 | 30/05/99 (24) | 75 | | | Lazio | | 15840 | | | | 0 | 0 | 5195 | 0 | +2 | (t.9, Coventry City) |
 OH Leuven < >  IFK Göteborg |
| ELA | < | Roméo LAVIA | DM | BEL | 59 | 95 | 06/01/04 (20) | 90 | 1.81 | 76 | IFK Göteborg | | 4080 | | | | 0 | 0 | 2570 | 0 | Y | (t.34, OH Leuven) |
| Brommapojkarna < > IFK Göteborg |
| KRK | < | Roony BARDGHJI | RW/AM | SWE | 54/58 | 95 | 15/11/05 (18) | 73 | | | IFK Göteborg | | 1150 | | | | 0 | 0 | 3850 | 0 | Y | (t.15, Brommapojkarna) |
| 1,200,000 < > Inter |
| ZHG | > | Dominik KOTARSKI | Gk | CRO | 59 | 81 | 10/02/00 (24) | 87 | 1.89 | 84 | Inter | | 8210 | | | | 0 | 0 | 2030 | 0 | | |
| 2,000,000 < > Inter |
| HPX | > | Raoul BELLANOVA | RB | ITA | 62 | 96 | 17/05/00 (24) | 96 | | | Inter | | 12260 | | | | 0 | 0 | 2620 | 0 | | |
| 1,400,000 < > Real Madrid |
| DKC | > | IKER MUŃOZ Cameros | CM | ESP | 56 | 91 | 05/11/02 (21) | 98 | 1.80 | 69 | Real Madrid | | 5230 | | | | 0 | 0 | 2230 | 0 | | |
| 620,000 < > Valencia |
| DOM | > | HUGO ÁLVAREZ Antúnez | CM | ESP | 50 | 83 | 02/07/03 (20) | 89 | | | Valencia | | 920 | | | | 0 | 0 | 1015 | 0 | Y | |
| 450,000 < > Real Betis |
| YDQ | > | Antonio Fuidias Ribera, TONI FUIDIAS | Gk | ESP | 52 | 98 | 15/04/01 (23) | 90 | 1.94 | 83 | Real Betis | | 2630 | | | | 0 | 0 | 790 | 0 | | |
| Birmingham City 2,345,000 < > Wolves |
| ZUX | > | Jack BUTLAND | Gk | ENG | 62 | 89 | 10/03/93 (31) | 86 | 1.92 | 94 | Wolves | | 11660 | | | | 0 | 0 | 1740 | 0 | +1 | |
| Loan callbacks |
| OJN | - | Levi COLWILL | CB/LB | ENG | 63 | 92 | 26/02/03 (21) | 81 | 1.87 | 75 | IFK Göteborg | | 5570 | | | | 0 | 0 | 4165 | 0 | Y | |
