| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Ibrahim Maza | Hertha BSC U17 | Fichaje | — |
| 1 jul 2021 | Álex Cardero | Real Oviedo Vetusta | Fichaje | — |
| 1 jul 2021 | Alex Lebarbier | Real Soc. Juv.A | Fichaje | — |
| 1 jul 2021 | Veljko Milosavljević | Red Star U16 | Fichaje | — |
| 1 jul 2021 | Nathan Fraser | Wolverhampton Wanderers U18 | Fichaje | Sin coste |
| 1 jul 2021 | Adrian Benedyczak | Parma Calcio 1913 | Fichaje | €2.8M |
| 1 jul 2021 | Taylor Harwood-Bellis | RSC Anderlecht | Cesión | — |
| 1 jul 2021 | Jonathan Rowe | Norwich City U23 | Fichaje | — |
| 1 jul 2021 | Thomas Ouwejan | FC Schalke 04 | Cesión | — |
| 1 jul 2021 | Sebastiano Esposito | Inter Milan | N/A | N/A |
| 1 jul 2021 | Robert Navarro | Real Sociedad | Fichaje | — |
| 1 jul 2021 | Jack Milne | Aberdeen FC B | Fichaje | — |
| 1 jul 2021 | Artur Gajdos | Dubnica | N/A | N/A |
| 1 jul 2021 | Koni De Winter | Juventus Next Gen | Fichaje | — |
| 1 jul 2021 | Luka Jović | Real Madrid CF | N/A | N/A |
| 1 jul 2021 | Elias Pitak | SK Slavia Prague U17 | Fichaje | — |
| 1 jul 2021 | Rodrigo Mendoza | Elche CF U19 | Fichaje | — |
| 1 jul 2021 | Javi Hernández | Espanyol Barcelona U19 | Fichaje | — |
| 1 jul 2021 | Nick Marsman | Inter Miami CF | Fichaje | Sin coste |
| 1 jul 2021 | Geoffrey Kondo | US Camon | Fichaje | Sin coste |
| 1 jul 2021 | Rafael Luís | SL Benfica U19 | Fichaje | Sin coste |
| 1 jul 2021 | Marius Courcoul | Angers SCO U17 | Fichaje | Sin coste |
| 1 jul 2021 | Kyliane Dong | ESTAC Troyes U19 | Fichaje | Sin coste |
| 1 jul 2021 | David López | RCD Mallorca U19 | Fichaje | — |
| 1 jul 2021 | Arman Taranis | Sin equipo | Fichaje | Sin coste |
| 1 jul 2021 | Arthur Theate | Bologna FC 1909 | Cesión | — |
| 1 jul 2021 | Haitam Abaida | Atlético Malagueño | Fichaje | — |
| 1 jul 2021 | Oscar Bobb | Manchester City U21 | Fichaje | — |
| 1 jul 2021 | Raphael Kofler | Südtirol Primavera | Fichaje | — |
| 1 jul 2021 | Ben Sheaf | Coventry City | Fichaje | Sin coste |
| 1 jul 2021 | Immanuel Pherai | Borussia Dortmund II | N/A | N/A |
| 1 jul 2021 | Yanis Issoufou | Nîmes Olympique U17 | Fichaje | Sin coste |
| 1 jul 2021 | André Ramalho | PSV Eindhoven | N/A | €2.5M |
| 1 jul 2021 | Gabriele Calvani | Genoa Under 18 | Fichaje | — |
| 1 jul 2021 | Deniz Türüç | Basaksehir FK | Fichaje | Sin coste |
| 1 jul 2021 | Luca Pellegrini | Juventus FC | N/A | N/A |
| 1 jul 2021 | Paul Piffer | AKA Vorarlberg U16 | Fichaje | Sin coste |
| 1 jul 2021 | Iván Fresneda | Real Valladolid U19 | Fichaje | — |
| 1 jul 2021 | Ishe Barrington Samuels-Smith | Everton U18 | Fichaje | — |
| 1 jul 2021 | Lorenz Szladits | AKA Rapid Wien U16 | Fichaje | Sin coste |