| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Diego Fuoli | UD Almería B | Fichaje | — |
| 1 jul 2021 | Riyad Idrissi | Cagliari Primavera | Fichaje | — |
| 1 jul 2021 | Adrián Lapeña | RC Deportivo de La Coruña | Fichaje | — |
| 1 jul 2021 | Rafik Guitane | Stade Rennais FC | N/A | N/A |
| 1 jul 2021 | Shiloh Kiesar ’t Zand | Feyenoord U21 | Fichaje | — |
| 1 jul 2021 | Arnau Ortiz | Girona FC B | Fichaje | — |
| 1 jul 2021 | Lorenzo Amatucci | Fiorentina U19 | Fichaje | — |
| 1 jul 2021 | Daniel Oyegoke | Brentford FC B | Fichaje | Sin coste |
| 1 jul 2021 | Laurenz Orgler | SK Rapid Wien II | Fichaje | Sin coste |
| 1 jul 2021 | Bruno Langa | GD Chaves | Fichaje | — |
| 1 jul 2021 | Josh Sheehan | Bolton Wanderers | Fichaje | Sin coste |
| 1 jul 2021 | Hákon Arnar Haraldsson | FC Copenhague | Fichaje | — |
| 1 jul 2021 | Álex Primo | Levante UD U19 | Fichaje | — |
| 1 jul 2021 | Johan Manzambi | Servette FC M-17 | Fichaje | — |
| 1 jul 2021 | Dylan Lobban | Aberdeen U18 | Fichaje | — |
| 1 jul 2021 | Orest Lebedenko | CD Lugo | N/A | N/A |
| 1 jul 2021 | Rafita Garrido | CD San Félix U19 | Fichaje | — |
| 1 jul 2021 | Jorge Castellanos del Olmo | Atlético Juv. B | Fichaje | — |
| 1 jul 2021 | Diego Tejón Naves | Sporting B | Fichaje | — |
| 1 jul 2021 | Ethan Ross | Sin equipo | Fichaje | Sin coste |
| 1 jul 2021 | Nail Omerovic | NK Osijek II | N/A | N/A |
| 1 jul 2021 | Selvi Clua | Girona FC JB | Fichaje | — |
| 1 jul 2021 | Keano Vanrafelghem | Club NXT | Fichaje | Sin coste |
| 1 jul 2021 | Unax del Cura | CD Roda U19 | Fichaje | — |
| 1 jul 2021 | Pedro Santos | SC Braga B | Fichaje | — |
| 1 jul 2021 | Nassef Chourak | Ajax U18 | Fichaje | Sin coste |
| 1 jul 2021 | Matteo Dams | PSV U18 | Fichaje | Sin coste |
| 1 jul 2021 | Zsombor Gruber | Puskás Akadémia FC | Fichaje | Sin coste |
| 1 jul 2021 | Kevin Medina | Málaga CF | Fichaje | — |
| 1 jul 2021 | Tymoteusz Puchacz | 1.FC Unión Berlín | € 3.5M | €3.5M |
| 1 jul 2021 | Paris Brunner | B. Dortmund U17 | Fichaje | — |
| 1 jul 2021 | Loum Tchaouna | Stade Rennais FC | Fichaje | — |
| 1 jul 2021 | Tom Bramel | Vitesse U18 | Fichaje | Sin coste |
| 1 jul 2021 | Zeno Debast | RSC Anderlecht | Fichaje | — |
| 1 jul 2021 | Manuel Pfeifer | SV Lafnitz | Fichaje | Sin coste |
| 1 jul 2021 | Henry Cartwright | Leicester U18 | Fichaje | — |
| 1 jul 2021 | Borja Alonso Cabrera | R. Madrid Juv.B | Fichaje | — |
| 1 jul 2021 | Arthur Okonkwo | Arsenal FC | Fichaje | Sin coste |
| 1 jul 2021 | Gvidas Gineitis | SPAL Primavera | Fichaje | — |
| 1 jul 2021 | Gaizka Alboniga-Menor | Athletic Bilbao U18 | Fichaje | Sin coste |