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| Transfers |
2,000,000 < >  FC Basel |
| IFK | > | Assan OUEDRAOGO | CM | GER | 48 | 84 | 09/05/06 (17) | 95 | 1.91 | 84 | FC Basel | | 1430 | | | | 0 | 0 | 980 | 0 | +2 | |
| FSV Mainz 05 5,500,000 < > FC Basel |
| WMQ | > | Nelson WEIPER | St | GER | 50 | 82 | 17/03/05 (19) | 94 | | | FC Basel | | 970 | | | | 0 | 0 | 1295 | 0 | Y | |
| URU | > | Brajan GRUDA | AM/W | GER | 55 | 76 | 31/05/04 (19) | 97 | | | FC Basel | | 2190 | | | | 0 | 0 | 2305 | 0 | Y | |
 FC Porto B 3,000,000 < > FC Basel |
| TVW | > | RODRIGO MORA de Carvalho | LM | POR | 43 | 86 | 05/05/07 (16) | 90 | | | FC Basel | | 340 | | | | 0 | 0 | 510 | 0 | Y | |
 Trabzonspor < >  SC Heerenveen |
| MPP | < | YASIN Özcan | CB | TUR | 59 | 95 | 20/04/06 (18) | 85 | | | SC Heerenveen | | 1510 | | | | 0 | 0 | 3020 | 0 | Y | (t.3, Trabzonspor) |
 Alavés 6,000,000 < > SC Heerenveen |
| TGR | > | Ermedin DEMIROVIC | W/St | BIH | 64 | 95 | 25/03/98 (26) | 88 | 1.84 | 83 | SC Heerenveen | | 19980 | | | | 0 | 0 | 4600 | 0 | +2 | |
 Union SG 3,000,000 < > SC Heerenveen |
| LZY | > | Davide FRATTESI | CM | ITA | 64 | 78 | 22/09/99 (24) | 89 | | | SC Heerenveen | | 19880 | | | | 0 | 0 | 5145 | 0 | +2 | |
| XDV | < | Houssem AOUAR | CM/AM | ALG | 63 | 2 | 30/06/98 (25) | 91 | 1.75 | 70 | Union SG | | | | | | | | 4215 | | | |
 Domzale 1,200,000 < >  Rangers |
| PEO | > | Luka TOPALOVIC | AM | SVN | 48 | 96 | 23/02/06 (18) | 90 | | | Rangers | | 760 | | | | 0 | 0 | 905 | 0 | Y | |
| Barcelona Atlčtic 100,000 < > Rangers |
| FXF | > | PAU PRIM Coma | DM | ESP | 37 | 85 | 22/02/06 (18) | 81 | | | Rangers | | 140 | | | | 0 | 0 | 70 | 0 | Y | |
| R.Madrid Castilla 2,000,000 < > Rangers |
| SSE | > | Nicolás Paz Martínez, NICO PAZ | AM | ARG | 52 | 88 | 08/09/04 (19) | 88 | 1.76 | 64 | Rangers | | 1380 | | | | 0 | 0 | 1490 | 0 | Y | |
| AZ < > 2,960,000 SV Werder Bremen |
| EEE | < | Davy KLAASSEN | CM/AM | NED | 64 | 14 | 21/02/93 (31) | 93 | 1.81 | 73 | AZ | | | | | | | | 3255 | | | |
| Greuther Fürth < > 2,190,000 SV Werder Bremen |
| TUF | < | Marvin SCHWÄBE | Gk | GER | 63 | 15 | 25/04/95 (29) | 94 | 1.90 | 86 | Greuther Fürth | | | | | | | | 2265 | | | |
| Carrarese < > 1,390,000 SV Werder Bremen |
| WFB | < | Fabio CHIARODIA | CB | ITA | 54 | 14 | 05/06/05 (18) | 86 | | | Carrarese | | | | | | | | 1470 | | | |
 Lokomotiv < > 1,280,000  Aston Villa |
| HNQ | < | Daniil KHUDYAKOV | Gk | RUS | 55 | 94 | 09/01/04 (20) | 94 | 1.94 | 85 | Lokomotiv | | 2080 | | | | 2 | 0 | 1550 | 0 | Y | |
| Morecambe < > 830,000 Aston Villa |
| RBE | < | Ben CHRISENE | CM | ENG | 51 | 15 | 12/01/04 (20) | 89 | | | Morecambe | | | | | | | | 1175 | | | |
| Juventus 3,400,000 < > Aston Villa |
| NCN | > | Willi ORBAN | CB/DM | HUN | 65 | 94 | 03/11/92 (31) | 89 | 1.85 | 80 | Aston Villa | 6.80 | 21400 | | | | 6 | 1 | 2560 | 0 | +4 | |
 César Vallejo < > 1,600,000 Feyenoord |
| RDN | < | Marcos Johan LÓPEZ Lanfranco | LB | PER | 60 | 15 | 20/11/99 (24) | 81 | 1.75 | 67 | César Vallejo | | | | | | | | 1955 | | | |
| 695,000 < > Feyenoord |
| WSY | > | Adam MONTGOMERY | LWB/LW | SCO | 49 | 83 | 18/07/02 (21) | 91 | | | Feyenoord | | 1530 | | | | 0 | 0 | 520 | 0 | +4 | |
| Altinordu 6,100,000 < > Zaragoza |
| UTK | > | ENIS Destan | St | TUR | 60 | 90 | 15/06/02 (21) | 91 | 1.84 | 76 | Zaragoza | | 7890 | | | | 0 | 0 | 4650 | 0 | +4 | |
| Fenerbahçe < > 1,880,000 Zaragoza |
| CGB | < | Kaan AYHAN | CB/RB | TUR | 62 | 95 | 10/11/94 (29) | 93 | 1.83 | 77 | Fenerbahçe | 7.06 | 12560 | | | | 0 | 0 | 1925 | 1 | +2 | |
Atalanta < >  IFK Göteborg |
| MZY | < | Destiny UDOGIE | LWB | ITA | 63/64 | 95 | 28/11/02 (21) | 79 | | | IFK Göteborg | | 17680 | | | | 0 | 0 | 4795 | 0 | +5 | (t.3, Atalanta) |
 Macarthur FC < > 1,490,000  Lille |
| WNS | < | Isaac LIHADJI | RW | FRA | 55 | 2 | 10/04/02 (22) | 92 | | | Macarthur FC | | | | | | | | 1740 | | | |
| Lorient 20,000,000 < > Lille |
| RUS | > | Enzo LE FÉE | CM | FRA | 64 | 79 | 03/02/00 (24) | 94 | | | Lille | | 19380 | | | | 0 | 0 | 5145 | 0 | +4 | |
| PSI | < | Florian SOTOCA | St/AM | FRA | 64 | 1 | 25/10/90 (33) | 92 | 1.87 | 80 | Lorient | | | | | | | | 2095 | | | |
| JBG | > | Yoane WISSA | LW/St | COD | 63 | 88 | 03/09/96 (27) | 96 | 1.80 | 75 | Lille | | 15640 | | | | 0 | 0 | 3745 | 0 | +4 | |
| NYC | < | Francis AMUZU | W | BEL | 60 | 7 | 23/08/99 (24) | 90 | 1.70 | 65 | Lorient | | | | | | | | 2880 | | | |
| Troyes 12,000,000 < > Lille |
| CAC | > | Bryan MBEUMO | W/WS | CMR | 64 | 68 | 07/08/99 (24) | 93 | 1.71 | 65 | Lille | | 18680 | | | | 0 | 0 | 5145 | 0 | +4 | |
| 2,400,000 < > Newcastle United |
| LJJ | > | Marcus TAVERNIER | LW | ENG | 62 | 82 | 22/03/99 (25) | 92 | 1.78 | 70 | Newcastle United | | 11460 | | | | 0 | 0 | 3645 | 0 | | |
| 3,000,000 < > Newcastle United |
| BNA | > | RODRIGO MUNIZ Carvalho | CS | BRA | 61 | 97 | 04/05/01 (22) | 92 | 1.84 | 71 | Newcastle United | | 9820 | | | | 0 | 0 | 4875 | 0 | | |
| 3,200,000 < > Blackburn Rovers |
| IPG | > | Lorenzo COLOMBO | CS | ITA | 61 | 76 | 08/03/02 (22) | 87 | 1.83 | 74 | Blackburn Rovers | | 9960 | | | | 0 | 0 | 4875 | 0 | | |
| FK Krasnodar 6,910,000 < > Milan |
| OSN | > | Luka JOVIC | CS | SRB | 64 | 96 | 23/12/97 (26) | 94 | 1.82 | 85 | Milan | | 17580 | | | | 0 | 0 | 5360 | 0 | +1 | |
| Guingamp 6,230,000 < > Wolves |
| AFR | > | Chukwunonso MADUEKE | RW | ENG | 62 | 87 | 10/03/02 (22) | 93 | 1.81 | 70 | Wolves | | 11460 | | | | 0 | 0 | 4830 | 0 | +1 | |
| Released |
| FSX | 16 | RENAN Brito Soares | Gk | BRA | 56 | 6 | 24/01/85 (39) | 87 | 1.87 | 81 | (retired) | | | 27 | | | | | F/t | | | |
| ARJ | 16 | Tando VELAPHI | Gk | AUS | 47/48 | 13 | 17/04/87 (37) | 78 | 1.85 | 70 | Melbourne Victory | | | | | | | | F/t | | | |
| Loan callbacks |
| MNG | - | Lequincio ZEEFUIK | CS/AM | NED | 48 | 91 | 26/11/04 (19) | 93 | | | SC Heerenveen | | 670 | | | | 0 | 0 | 965 | 0 | Y | |
