| # | Player | Position | Citizenship | Club | Born | Value |
|---|---|---|---|---|---|---|
| 1 |  Jhoanner Chávez | Defender - Left-Back | Ecuador | RC Lens | 2002 | €3.5m |
| 2 |  Frans Krätzig | Defender - Left-Back | Germany | Red Bull Salzburg | 2003 | €3.5m |
| 3 |  Omar Campos | Defender - Left-Back | Mexico | CD Cruz Azul | 2002 | €3.8m |
| 4 |  Lucas Esquivel | Defender - Left-Back | Argentina | Club Athletico Paranaense | 2001 | €3.0m |
| 5 |  Jesús Vázquez | Defender - Left-Back | Spain | Valencia CF | 2003 | €3.0m |
| 6 |  Moussa N'Diaye | Defender - Left-Back | Senegal | RSC Anderlecht | 2002 | €3.0m |
| 7 |  Pedro Henrique | Defender - Left-Back | Brazil | Shakhtar Donetsk | 2002 | €4.0m |
| 8 |  Bjorn Meijer | Defender - Left-Back | Netherlands | Club Brugge KV | 2003 | €4.0m |
| 9 |  Tuur Rommens | Defender - Left-Back | Belgium | KVC Westerlo | 2003 | €4.0m |
| 10 |  Josh Wilson-Esbrand | Defender - Left-Back | England Jamaica | Radomiak Radom | 2002 | €4.0m |
| 11 |  Nazinho | Defender - Left-Back | Portugal Guinea-Bissau | Cercle Brugge | 2003 | €3.0m |
| 12 |  Kristoffer Lund | Defender - Left-Back | United States Denmark | 1.FC Köln | 2002 | €2.7m |
| 13 |  Jordan Bos | Defender - Left-Back | Australia Netherlands | Feyenoord Rotterdam | 2002 | €2.7m |
| 14 |  Adama Boiro | Defender - Left-Back | Spain Senegal | Athletic Bilbao | 2002 | €2.5m |
| 15 |  Julián Aude | Defender - Left-Back | Argentina Italy | Los Angeles Galaxy | 2003 | €2.5m |
| 16 |  John Tolkin | Defender - Left-Back | United States | Holstein Kiel | 2002 | €2.5m |
| 17 |  Ebenezer Annan | Defender - Left-Back | Ghana | AS Saint-Étienne | 2002 | €2.5m |
| 18 |  Hugo | Defender - Left-Back | Brazil | Al-Wasl FC | 2001 | €2.5m |
| 19 |  Edoardo Pieragnolo | Defender - Left-Back | Italy | US Sassuolo | 2003 | €2.4m |
| 20 |  Daouda Guindo | Defender - Left-Back | Mali | Stade Brestois 29 | 2002 | €2.0m |
| 21 |  Leonardo Buta | Defender - Left-Back | Portugal Angola | SD Eibar | 2002 | €2.0m |
| 22 |  Oleksandr Martynyuk | Defender - Left-Back | Ukraine | Metalist 1925 Kharkiv | 2001 | €2.0m |
| 23 |  George Bello | Defender - Left-Back | United States Nigeria | LASK | 2002 | €2.0m |
| 24 |  Josh Doig | Defender - Left-Back | Scotland | US Sassuolo | 2002 | €5.0m |
| 25 |  Carlos Romero | Defender - Left-Back | Spain | RCD Espanyol Barcelona | 2001 | €5.0m |
| 26 |  Leo Hjelde | Defender - Left-Back | Norway England | Sunderland AFC | 2003 | €2.0m |
| 27 |  Artem Smolyakov | Defender - Left-Back | Ukraine | Los Angeles FC | 2003 | €1.8m |
| 28 |  Jimer Fory | Defender - Left-Back | Colombia | Portland Timbers | 2002 | €1.8m |
| 29 |  Rikelme | Defender - Left-Back | Brazil | Shabab Al-Ahli Club | 2003 | €1.8m |
| 30 |  Patryck | Defender - Left-Back | Brazil Italy | São Paulo Futebol Clube | 2003 | €1.5m |