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| Transfers |
 Basaksehir < > 1,800,000  Rangers |
| LTU | < | Wojciech SZCZESNY | Gk | POL | 65 | 13 | 18/04/90 (35) | 89 | 1.95 | 84 | Basaksehir | | | | | | | | 2025 | | | |
 Al-Jazira < > 2,780,000 Rangers |
| RHM | < | YUSUF Yazici | AM | TUR | 62 | 12 | 29/01/97 (28) | 82 | 1.83 | 78 | Al-Jazira | | | | | | | | 3030 | | | |
 FC Křbenhavn < > 1,270,000  Club Brugge |
| OIM | < | Casper NIELSEN | CM | DEN | 60 | 10 | 29/04/94 (31) | 90 | 1.82 | 74 | FC Křbenhavn | | | | | | | | 1795 | | | |
 Paris SG < > Club Brugge |
| DXL | > | Warren ZAĎRE-EMERY | CM/DM | FRA | 65 | 95 | 08/03/06 (19) | 80 | 1.78 | 68 | Paris SG | | 13100 | | | | 0 | 0 | 9690 | 0 | Y | (t.41, Club Brugge) |
| JPE | > | ENDRICK Felipe Moreira de Sousa | St | BRA | 58/61 | 95 | 21/07/06 (18) | 75 | 1.73 | 66 | Paris SG | | 5880 | | | | 0 | 0 | 6910 | 0 | Y | (t.41, Club Brugge) |
 NAC < > SC Heerenveen |
| GCQ | < | Quilindschy HARTMAN | LB | NED | 62 | 93 | 14/11/01 (23) | 85 | 1.83 | 77 | SC Heerenveen | | 15340 | | | | 0 | 0 | 2950 | 0 | +1 | (t.23, NAC) |
 Inter 8,500,000 < > Paris SG |
| VNO | > | Marcus THURAM | St/LW | FRA | 68 | 94 | 06/08/97 (27) | 91 | 1.89 | 79 | Paris SG | 6.94 | 43140 | | | | 1 | 0 | 8965 | 8 | +4 | |
| JMJ | < | Nathan AKÉ | CB/LB | NED | 67 | 99 | 18/02/95 (30) | 90 | 1.80 | 71 | Inter | 7.40 | 32160 | | | | 3 | 1 | 3685 | 1 | | |
 Zaragoza 6,000,000 < > Paris SG |
| FUF | > | Maximilian BEIER | St | GER | 64 | 98 | 17/10/02 (22) | 92 | 1.83 | 70 | Paris SG | 6.50 | 18980 | | | | 0 | 0 | 7515 | 4 | +4 | |
| CGN | < | Victor Okoh BONIFACE | CS | NGA | 64 | 94 | 23/12/00 (24) | 85 | 1.92 | 82 | Zaragoza | | 16280 | | | | 0 | 0 | 6000 | 0 | | |
1,600,000 < >  Sporting |
| OOR | > | Adam AZNOU | LB | MAR | 55 | 96 | 02/06/06 (19) | 90 | 1.78 | 70 | Sporting | | 2220 | | | | 0 | 0 | 1570 | 0 | Y | |
| 1,300,000 < > Sporting |
| TJD | > | Dies JANSE | CB | NED | 54 | 95 | 17/01/06 (19) | 90 | | | Sporting | | 1730 | | | | 0 | 0 | 1355 | 0 | Y | |
| Roma 3,500,000 < > Kaiserslautern |
| GBH | > | Evan Obite N'DICKA | CB | CIV | 65 | 99 | 20/08/99 (25) | 90 | 1.92 | 88 | Kaiserslautern | 7.00 | 22200 | | | | 1 | 1 | 3815 | 1 | +3 | |
| OUK | < | Dávid HANCKO | CB | SVK | 65 | 94 | 13/12/97 (27) | 87 | 1.88 | 80 | Roma | 7.05 | 19800 | | | | 3 | 0 | 3395 | 0 | | |
| 850,000 < > Kaiserslautern |
| SVU | > | YUSUF Akçiçek | CB/LB | TUR | 52 | 97 | 25/01/06 (19) | 90 | | | Kaiserslautern | | 1310 | | | | 0 | 0 | 1005 | 0 | Y | |
| Lille 20,000,000 < > Milan |
| EVV | > | Samuele RICCI | CM/DM | ITA | 65 | 92 | 21/08/01 (23) | 91 | 1.74 | 59 | Milan | | 19300 | | | | 3 | 0 | 6680 | 0 | +2 | |
| Fort. Düsseldorf 6,800,000 < > Milan |
| APP | > | Kouadio Manu KONÉ | CM | FRA | 64 | 98 | 17/05/01 (24) | 90 | 1.80 | 71 | Milan | 7.25 | 16580 | | | | 2 | 0 | 5145 | 0 | +2 | |
| 500,000 < > Feyenoord |
| KPN | > | Mattia LIBERALI | AM/RW | ITA | 41 | 90 | 06/04/07 (18) | 87 | | | Feyenoord | | 220 | | | | 0 | 0 | 310 | 0 | Y | |
| Anderlecht 10,000,000 < > Feyenoord |
| TYN | > | Francesco CAMARDA | CS | ITA | 47 | 95 | 10/03/08 (17) | 89 | 1.85 | 75 | Feyenoord | | 590 | | | | 0 | 0 | 990 | 0 | Y | |
| 925,000 < > Lazio |
| CKR | > | Tyrique GEORGE | W | ENG | 53 | 82 | 04/02/06 (19) | 90 | | | Lazio | | 1710 | | | | 0 | 0 | 1725 | 0 | Y | |
Strasbourg < > 5,410,000  IFK Göteborg |
| AER | < | Moussa DIABY | W/AM | FRA | 64 | 10 | 07/07/99 (25) | 91 | 1.70 | 65 | Strasbourg | | | | | | | | 4875 | | | |
| 1,300,000 < > Mallorca |
| ALC | < | Ebenezer ANNAN | CB | GHA | 58 | 89 | 21/08/02 (22) | 82 | | | Mallorca | | 5890 | | | | 0 | 0 | 1840 | 0 | | |
| 2,400,000 < > Mallorca |
| NFX | > | JOFRE Carreras Pages | RW | ESP | 60 | 82 | 17/06/01 (23) | 94 | 1.75 | 68 | Mallorca | | 9260 | | | | 0 | 0 | 3245 | 0 | | |
 Banfield 5,475,000 < > Vélez Sársfield |
| DMI | > | Julián CARRANZA | St | ARG | 62 | 97 | 22/05/00 (25) | 90 | 1.76 | 66 | Vélez Sársfield | | 12560 | | | | 0 | 0 | 4245 | 2 | +1 | |
| Loan/transfer listed |
| TBL | - | Michal SKÓRAS | RM | POL | 61 | 91 | 15/02/00 (25) | 93 | 1.72 | 64 | Club Brugge | | 6900 | 12 | | T | 2 | 0 | 3150 | 0 | | |
| CSG | - | Éder Álvarez BALANTA | CB/LB | COL | 60 | 94 | 28/02/93 (32) | 88 | 1.81 | 84 | Club Brugge | | 7890 | | | T | 0 | 0 | 925 | 0 | | |
| IIQ | - | Abdukodir KHUSANOV | CB | UZB | 61 | 94 | 29/02/04 (21) | 86 | 1.86 | 84 | Kaiserslautern | | 10220 | | | T | 0 | 0 | 3130 | 0 | | |
| JAV | - | IKER BRAVO Solanilla | St | ESP | 54 | 91 | 13/01/05 (20) | 91 | | | Kaiserslautern | | 1710 | | | T | 0 | 0 | 2130 | 0 | Y | |
| Released |
| LDE | 16 | Dedryck BOYATA | CB/RB | BEL | 56 | 12 | 08/09/90 (34) | 91 | 1.87 | 76 | Beerschot AC | | | | | | | | 145 | | | |
| DMP | 16 | Tristan DEGREEF | AM | BEL | 50 | 1 | 19/01/05 (20) | 87 | | | Anderlecht | | | | | | | | 1015 | | | |
| Loan callbacks |
| NQH | - | Cihan ÇANAK | AM/W | TUR | 57/58 | 91 | 24/01/05 (20) | 78 | 1.75 | 65 | SC Heerenveen | | 3220 | | | | 1 | 0 | 3275 | 0 | Y | |
