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| Transfers |
 Hajduk Split 4,800,000 < >  FC Basel |
| WYL | > | Rokas PUKSTAS | AM | USA | 58 | 75 | 25/08/04 (19) | 89 | | | FC Basel | | 3450 | | | | 0 | 0 | 3560 | 0 | Y | |
 Ferencváros 2,300,000 < > FC Basel |
| YBF | > | Krisztián LISZTES | AM | HUN | 53 | 87 | 06/05/05 (19) | 81 | | | FC Basel | | 1520 | | | | 0 | 0 | 1725 | 0 | Y | |
 Rayo Vallecano < > 1,750,000 FC Basel |
| DHP | < | Héctor BELLERÍN Moruno | RWB | ESP | 61/63 | 94 | 19/03/95 (29) | 77 | 1.87 | 81 | Rayo Vallecano | | 14340 | | | | 1 | 0 | 2225 | 0 | +2 | |
 TSG Hoffenheim < >  Rangers |
| YEC | < | Saël KUMBEDI Nseke | RB | FRA | 60 | 94 | 26/03/05 (19) | 91 | | | Rangers | | 4030 | | | | 0 | 0 | 3225 | 0 | Y | (t.13, TSG Hoffenheim) |
 Unirea Urziceni 4,500,000 < > Rangers |
| BER | > | Waldemar ANTON | CB | GER | 65 | 88 | 20/07/96 (27) | 89 | 1.82 | 66 | Rangers | | 21500 | | | | 0 | 0 | 3395 | 0 | +2 | |
 SC Heerenveen < > 20,000,000 Paris SG |
| HMM | < | Alexander ISAK | St | SWE | 66 | 93 | 21/09/99 (24) | 90 | 1.91 | 74 | SC Heerenveen | | 27920 | | | | 2 | 0 | 8005 | 0 | +2 | |
| XXO | > | JOĂO Pedro Gonçalves NEVES | AM/CM | POR | 62 | 95 | 27/09/04 (19) | 87 | 1.74 | 66 | Paris SG | | 7160 | | | | 1 | 0 | 6325 | 0 | Y | |
 Antwerp 5,000,000 < > Lille |
| EGQ | < | ALEXSANDRO Victor de Souza Ribeiro | CB | BRA | 62 | 0 | 09/08/99 (24) | 92 | 1.92 | 88 | Antwerp | | | | | | | | 2620 | | | |
| EDX | > | William Joel PACHO Tenorio | CB | ECU | 64 | 88 | 16/10/01 (22) | 91 | 1.86 | 81 | Lille | | 17680 | | | | 0 | 0 | 4355 | 0 | +4 | |
| 200,000 < > Lille |
| BYE | > | Wesley OKODUWA | RB | ENG | 37 | 96 | 12/05/08 (16) | 86 | | | Lille | | 300 | | | | 0 | 0 | 100 | 0 | +4 | |
| Borussia Dortmund < > SC Heerenveen |
| EDK | < | Myron VAN BREDERODE | St | NED | 60 | 95 | 06/07/03 (20) | 92 | | | SC Heerenveen | | 7540 | | | | 0 | 0 | 5090 | 0 | | (t.13, Borussia Dortmund) |
| Ponte Preta < > Arsenal |
| KDW | < | GABRIEL Silva MOSCARDO de Salles | DM | BRA | 57/59 | 96 | 28/08/05 (18) | 77 | | | Arsenal | | 2140 | | | | 0 | 0 | 3020 | 0 | Y | (t.32, Ponte Preta) |
 Frosinone < > Arsenal |
| ECI | < | Sandro TONALI | CM | ITA | 65 | 95 | 08/05/00 (24) | 92 | 1.73 | 65 | Arsenal | | 30220 | | | | 2 | 0 | 5940 | 0 | +3 | (t.32, Frosinone) |
 Al-Feiha < > 3,130,000 Deportivo |
| SAH | < | Patson DAKA | CS | ZAM | 57/59 | 14 | 09/10/98 (25) | 77 | 1.85 | 75 | Al-Feiha | | | | | | | | 2730 | | | |
| Eibar < > Lazio |
| ILU | < | Michael OLISE | RW/AM | FRA | 62/63 | 94 | 12/12/01 (22) | 79 | 1.80 | 68 | Lazio | | 14240 | | | | 0 | 0 | 5580 | 0 | +3 | (t.7, Eibar) |
 FC Seoul < > Lazio |
| NDP | < | Conor GALLAGHER | CM | ENG | 65 | 96 | 06/02/00 (24) | 84 | 1.82 | 74 | Lazio | | 14640 | | | | 1 | 0 | 5940 | 0 | +1 | (t.7, FC Seoul) |
 Panathinaikos < > IFK Göteborg |
| JMT | < | Sven BOTMAN | CB | NED | 65 | 95 | 12/01/00 (24) | 92 | 1.95 | 83 | IFK Göteborg | | 28720 | | | | 2 | 0 | 4025 | 0 | +3 | (t.7, Panathinaikos) |
| 1,400,000 < > Espanyol |
| DGB | > | AITOR PAREDES Casamichana | CB | ESP | 61 | 96 | 29/04/00 (24) | 93 | 1.85 | 74 | Espanyol | | 10520 | | | | 0 | 0 | 2265 | 0 | | |
| 400,000 < > 1.FC Köln |
| YZD | > | Ramon HENDRIKS | CB | NED | 51 | 97 | 18/07/01 (22) | 87 | 1.89 | 76 | 1.FC Köln | | 2160 | | | | 0 | 0 | 635 | 0 | | |
| 1,200,000 < > Kaiserslautern |
| PUV | > | Yann Aurel BISSECK | CB/DM | GER | 59 | 99 | 29/11/00 (23) | 97 | 1.94 | 83 | Kaiserslautern | | 6640 | | | | 0 | 0 | 1905 | 0 | | |
 Peńarol 3,695,000 < > Leicester City |
| OYK | > | Santiago Ignacio BUENO Sciutto | CB/CM | URU | 63 | 87 | 09/11/98 (25) | 90 | 1.89 | 78 | Leicester City | | 13040 | | | | 0 | 0 | 2865 | 0 | +1 | |
| Released |
| MZF | 25+ | Stefano RUSSO | Gk | ITA | 43 | 1 | 06/03/89 (35) | 89 | 1.85 | 79 | Palazzolo | | | | | | | | F/t | | | |
| Loan callbacks |
| LBV | - | MATHEUS FRANÇA de Oliveira | CM | BRA | 54 | 92 | 01/04/04 (20) | 83 | | | Paris SG | | 1890 | | | | 0 | 0 | 1830 | 0 | Y | |
| DWX | - | Rico LEWIS | RWB/DM | ENG | 61/62 | 87 | 21/11/04 (19) | 78 | 1.75 | 70 | Paris SG | | 5410 | | | | 0 | 0 | 4280 | 0 | Y | |
| PMT | - | Simon ADINGRA | LW | CIV | 60/63 | 94 | 01/01/02 (22) | 76 | 1.75 | 68 | IFK Göteborg | | 5150 | | | | 0 | 0 | 5580 | 0 | +3 | |
