| 1 |  Fidel Ambríz | Midfield - Defensive Midfield | Mexico | CF Monterrey | 2003 | €5.0m |
| 2 |  Alexsander | Midfield - Defensive Midfield | Brazil | Clube Atlético Mineiro | 2003 | €5.0m |
| 3 |  Evertton Araújo | Midfield - Defensive Midfield | Brazil | CR Flamengo | 2003 | €5.0m |
| 4 |  Antoni Kozubal | Midfield - Defensive Midfield | Poland | Lech Poznan | 2004 | €5.0m |
| 5 |  Facundo Bernal | Midfield - Defensive Midfield | Uruguay Italy | Fluminense Football Club | 2003 | €5.0m |
| 6 |  Leonel Pérez | Midfield - Defensive Midfield | Argentina | CA Huracán | 2004 | €4.5m |
| 7 |  Anthony Dennis | Midfield - Defensive Midfield | Nigeria | Göztepe | 2004 | €4.0m |
| 8 |  Niko Sigur | Midfield - Defensive Midfield | Canada Croatia | HNK Hajduk Split | 2003 | €4.0m |
| 9 |  Stije Resink | Midfield - Defensive Midfield | Netherlands | FC Groningen | 2003 | €4.0m |
| 10 |  Ugo Raghouber | Midfield - Defensive Midfield | France | LOSC Lille | 2003 | €4.0m |
| 11 |  Maxi Oyedele | Midfield - Defensive Midfield | Poland England | RC Strasbourg Alsace | 2004 | €4.0m |
| 12 |  Santiago Castañeda | Midfield - Defensive Midfield | United States Colombia | SC Paderborn 07 | 2004 | €4.0m |
| 13 |  Junior Mwanga | Midfield - Defensive Midfield | France DR Congo | FC Nantes | 2003 | €6.0m |
| 14 |  Lorenzo Amatucci | Midfield - Defensive Midfield | Italy | UD Las Palmas | 2004 | €3.5m |
| 15 |  Igor Jesus | Midfield - Defensive Midfield | Brazil | Los Angeles FC | 2003 | €3.5m |
| 16 |  Mohamed Bamba | Midfield - Defensive Midfield | Cote d'Ivoire | Gil Vicente FC | 2004 | €3.0m |
| 17 |  William Clem | Midfield - Defensive Midfield | Denmark Norway | FC Copenhagen | 2004 | €3.0m |
| 18 |  Aljoscha Kemlein | Midfield - Defensive Midfield | Germany | 1.FC Union Berlin | 2004 | €7.0m |
| 19 |  Dermane Karim | Midfield - Defensive Midfield | Togo | FC Lorient | 2003 | €3.0m |
| 20 |  Ibrahim Sulemana | Midfield - Defensive Midfield | Ghana | Bologna FC 1909 | 2003 | €7.0m |
| 21 |  Damián Rodríguez | Midfield - Defensive Midfield | Spain | Celta de Vigo | 2003 | €3.0m |
| 22 |  Mads Enggård | Midfield - Defensive Midfield | Denmark | Vejle Boldklub | 2004 | €2.8m |
| 23 |  Mateusz Legowski | Midfield - Defensive Midfield | Poland | Eyüpspor | 2003 | €2.5m |
| 24 |  Dje Davilla | Midfield - Defensive Midfield | Cote d'Ivoire | Chicago Fire FC | 2003 | €2.5m |
| 25 |  David Ruíz | Midfield - Defensive Midfield | Honduras United States | Inter Miami CF | 2004 | €2.5m |
| 26 |  Alonzo Engwanda | Midfield - Defensive Midfield | Belgium DR Congo | FC Utrecht | 2003 | €2.5m |
| 27 |  Ronald | Midfield - Defensive Midfield | Brazil Poland | Atlético Clube Goianiense | 2003 | €2.5m |
| 28 |  Maestro | Midfield - Defensive Midfield | Angola | Alanyaspor | 2003 | €2.5m |
| 29 |  Joaquín Mosqueira | Midfield - Defensive Midfield | Argentina Italy | CA Talleres | 2004 | €2.2m |
| 30 |  Luka Hyryläinen | Midfield - Defensive Midfield | Finland | 1.FC Magdeburg | 2004 | €2.0m |