| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Gonzalo García | R. Madrid Juv.B | Fichaje | — |
| 1 jul 2021 | Junior Kroupi | FC Lorient U17 | Fichaje | — |
| 1 jul 2021 | Eneko Satrústegui Plano | Racing Club | Fichaje | — |
| 1 jul 2021 | Jakov Medić | FC St. Pauli | Fichaje | €400k |
| 1 jul 2021 | Davide Bartesaghi | Milan Cad. A | Fichaje | — |
| 1 jul 2021 | Archie Gray | Leeds U18 | Fichaje | — |
| 1 jul 2021 | Wout Asselman | KAA Gent U18 | Fichaje | — |
| 1 jul 2021 | Weston McKennie | Juventus FC | Fichaje | €21.9M |
| 1 jul 2021 | Enrique Meaurio Barona | Avilés Juvenil | Fichaje | — |
| 1 jul 2021 | Johaneko Louis-Jean | G. Bordeaux B | Fichaje | — |
| 1 jul 2021 | Freddie Draper | Lincoln City | Fichaje | Sin coste |
| 1 jul 2021 | Ashley Phillips | Blackburn Rovers U18 | Fichaje | Sin coste |
| 1 jul 2021 | Abdoulaye Kanté | Racing Club Abidjan | Fichaje | Sin coste |
| 1 jul 2021 | Joedrick Pupe | KVC Winkel Sport (-2024) | Fichaje | Sin coste |
| 1 jul 2021 | Marcos Bustillo | Rayo Cantabria | Fichaje | — |
| 1 jul 2021 | David Amegnaglo | SpVgg Unterhaching U17 | Fichaje | Sin coste |
| 1 jul 2021 | Lukas Hornicek | SC Braga B | Fichaje | — |
| 1 jul 2021 | Francisco Petrasso | CA River Plate II | Fichaje | — |
| 1 jul 2021 | Manprit Sarkaria | SK Sturm Graz | Fichaje | Sin coste |
| 1 jul 2021 | Franculino | SL Benfica U19 | Fichaje | Sin coste |
| 1 jul 2021 | Gustav Christensen | FC Midtjylland U19 | Fichaje | Sin coste |
| 1 jul 2021 | Eneko Astigarraga Alkorta | Real Soc. Juv.A | Fichaje | — |
| 1 jul 2021 | Gabriel Costa Brás | FC Porto U19 | Fichaje | — |
| 1 jul 2021 | Lazare Amani | Union Saint-Gilloise | Cesión | Préstamo / cesión |
| 1 jul 2021 | Liam Polworth | Kilmarnock FC | Fichaje | — |
| 1 jul 2021 | Dayann Méthalie | Toulouse FC U17 | Fichaje | — |
| 1 jul 2021 | Jean Lucas de Souza Oliveira | Olympique Lyonnais | N/A | N/A |
| 1 jul 2021 | Ismael Sierra | Betis Juvenil A | Fichaje | — |
| 1 jul 2021 | Marash Kumbulla | AS Roma | Fichaje | €26.5M |
| 1 jul 2021 | Alex Král | West Ham United FC | Cesión | — |
| 1 jul 2021 | Dejan Radonjic | AKA Austria Wien U18 | Fichaje | Sin coste |
| 1 jul 2021 | Freek Entius | Ajax Juvenil | Fichaje | — |
| 1 jul 2021 | Crysencio Jilbert Sylverio Summerville | Leeds United FC | Fichaje | — |
| 1 jul 2021 | Fodé Sylla | RC Lens U17 | Fichaje | Sin coste |
| 1 jul 2021 | Tim Iroegbunam | West Bromwich Albion U21 | Fichaje | — |
| 1 jul 2021 | Nuno Moreira | Vizela | N/A | N/A |
| 1 jul 2021 | Florian Micheler | — | N/A | N/A |
| 1 jul 2021 | Ante Budimir | CA Osasuna | Fichaje | €8.0M |
| 1 jul 2021 | Christian Zawieschitzky | AKA Red Bull Salzburg U16 | Fichaje | Sin coste |
| 1 jul 2021 | Nhoa Sangui | Stade Reims U17 | Fichaje | — |