| 1 |  David Ayala | Midfield - Defensive Midfield | Argentina | Portland Timbers | 2002 | €4.0m |
| 2 |  Stije Resink | Midfield - Defensive Midfield | Netherlands | FC Groningen | 2003 | €4.0m |
| 3 |  Niko Sigur | Midfield - Defensive Midfield | Canada Croatia | HNK Hajduk Split | 2003 | €4.0m |
| 4 |  Anthony Dennis | Midfield - Defensive Midfield | Nigeria | Göztepe | 2004 | €4.0m |
| 5 |  Igor Jesus | Midfield - Defensive Midfield | Brazil | Los Angeles FC | 2003 | €3.5m |
| 6 |  Lorenzo Amatucci | Midfield - Defensive Midfield | Italy | UD Las Palmas | 2004 | €3.5m |
| 7 |  Jakub Kaluzinski | Midfield - Defensive Midfield | Poland | Antalyaspor | 2002 | €3.5m |
| 8 |  Evertton Araújo | Midfield - Defensive Midfield | Brazil | CR Flamengo | 2003 | €5.0m |
| 9 |  Mamady Diambou | Midfield - Defensive Midfield | Mali | Red Bull Salzburg | 2002 | €3.0m |
| 10 |  Fidel Ambríz | Midfield - Defensive Midfield | Mexico | CF Monterrey | 2003 | €5.0m |
| 11 |  Facundo Bernal | Midfield - Defensive Midfield | Uruguay Italy | Fluminense Football Club | 2003 | €5.0m |
| 12 |  Alexsander | Midfield - Defensive Midfield | Brazil | Clube Atlético Mineiro | 2003 | €5.0m |
| 13 |  William Clem | Midfield - Defensive Midfield | Denmark Norway | FC Copenhagen | 2004 | €3.0m |
| 14 |  Iker Muñoz | Midfield - Defensive Midfield | Spain | CA Osasuna | 2002 | €3.0m |
| 15 |  Damián Rodríguez | Midfield - Defensive Midfield | Spain | Celta de Vigo | 2003 | €3.0m |
| 16 |  Dermane Karim | Midfield - Defensive Midfield | Togo | FC Lorient | 2003 | €3.0m |
| 17 |  Veldin Hodza | Midfield - Defensive Midfield | Kosovo Croatia | Rubin Kazan | 2002 | €3.0m |
| 18 |  Toby Collyer | Midfield - Defensive Midfield | England | West Bromwich Albion | 2004 | €5.0m |
| 19 |  Mads Enggård | Midfield - Defensive Midfield | Denmark | Vejle Boldklub | 2004 | €2.8m |
| 20 |  Alonzo Engwanda | Midfield - Defensive Midfield | Belgium DR Congo | FC Utrecht | 2003 | €2.5m |
| 21 |  Mateusz Legowski | Midfield - Defensive Midfield | Poland | Eyüpspor | 2003 | €2.5m |
| 22 |  Maestro | Midfield - Defensive Midfield | Angola | Alanyaspor | 2003 | €2.5m |
| 23 |  Dje Davilla | Midfield - Defensive Midfield | Cote d'Ivoire | Chicago Fire FC | 2003 | €2.5m |
| 24 |  Ronald | Midfield - Defensive Midfield | Brazil Poland | Atlético Clube Goianiense | 2003 | €2.5m |
| 25 |  David Ruíz | Midfield - Defensive Midfield | Honduras United States | Inter Miami CF | 2004 | €2.5m |
| 26 |  Connor Barron | Midfield - Defensive Midfield | Scotland | Rangers FC | 2002 | €2.5m |
| 27 |  Patrickson Delgado | Midfield - Defensive Midfield | Ecuador | FC Dallas | 2003 | €2.0m |
| 28 |  Daniel Edelman | Midfield - Defensive Midfield | United States | New York Red Bulls | 2003 | €2.0m |
| 29 |  Timothy Ouma | Midfield - Defensive Midfield | Kenya | Lech Poznan | 2004 | €2.0m |
| 30 |  Ryan | Midfield - Defensive Midfield | Brazil | Sport Club Corinthians Paulista | 2003 | €2.0m |