| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Sékou Fofana | FC Lausanne-Sport II | Fichaje | — |
| 1 jul 2021 | Thibault De Smet | Beerschot VA | Cesión | — |
| 1 jul 2021 | Andrés Rodríguez | FC Villarreal C | Fichaje | — |
| 1 jul 2021 | Aurelio Oehlers | FC Utrecht U21 | Fichaje | Sin coste |
| 1 jul 2021 | Carlos Vicente | CD Calahorra | Fichaje | Sin coste |
| 1 jul 2021 | Tom Iorpenda | Huddersfield Town U17 | Fichaje | Sin coste |
| 1 jul 2021 | Bertuğ Yıldırım | Hatayspor | Fichaje | Sin coste |
| 1 jul 2021 | Jeff Chabot | UC Sampdoria | N/A | N/A |
| 1 jul 2021 | Emil Højlund | FC Copenhagen U19 | Fichaje | — |
| 1 jul 2021 | Maicon | Sin equipo | Fichaje | Sin coste |
| 1 jul 2021 | Miguel Narváez | CD Badajoz B | Fichaje | — |
| 1 jul 2021 | Remko Jurian Pasveer | Ajax de Ámsterdam | Fichaje | — |
| 1 jul 2021 | Matteo Cancellieri | Hellas Verona | Fichaje | €4.0M |
| 1 jul 2021 | Rafa Soares | Vitória Guimarães SC | N/A | N/A |
| 1 jul 2021 | Adam Tahaui | Vitesse U18 | Fichaje | — |
| 1 jul 2021 | Manel Usedo Domingo | Roda Fút. base | Fichaje | — |
| 1 jul 2021 | Luc De Fougerolles | Fulham FC U18 | Fichaje | — |
| 1 jul 2021 | Fermín López | FC Barcelona U19 | Fichaje | — |
| 1 jul 2021 | Per Kristian Worre Bråtveit | Nîmes | Cesión | — |
| 1 jul 2021 | Niels Devalckeneer | Royal Antwerp FC U18 | Fichaje | Sin coste |
| 1 jul 2021 | Álex Calatrava | UE Costa Brava | Fichaje | — |
| 1 jul 2021 | Nacho Martín | Sporting B | Fichaje | — |
| 1 jul 2021 | Niklas Mohr | SG Sonnenhof Großaspach U19 | Fichaje | — |
| 1 jul 2021 | Ianis Stoica | FCSB | N/A | N/A |
| 1 jul 2021 | Mohamed Kader Meïté | Montrouge Jgd | Fichaje | — |
| 1 jul 2021 | Wesley Theodorus Hoedt | RSC Anderlecht | Fichaje | — |
| 1 jul 2021 | Daouda Traoré | OGC Nice U17 | Fichaje | — |
| 1 jul 2021 | Petar Markovic | AKA Austria Wien U16 | Fichaje | Sin coste |
| 1 jul 2021 | Selu Diallo | Club San Ignacio | Fichaje | — |
| 1 jul 2021 | Sergio Cubero | SD Eibar | Fichaje | — |
| 1 jul 2021 | Luca Jaquez | FC Luzern U21 | Fichaje | — |
| 1 jul 2021 | Johan Meyer | FC Nordsjaelland U19 | Fichaje | Sin coste |
| 1 jul 2021 | Daniel Oyegoke | Brentford B | Fichaje | — |
| 1 jul 2021 | Sami Ouaissa | Roda JC U21 | Fichaje | — |
| 1 jul 2021 | Goduine Koyalipou | FC Lausanne-Sport | Fichaje | Sin coste |
| 1 jul 2021 | Matte Smets | STVV Youth | Fichaje | Sin coste |
| 1 jul 2021 | Kiliann Eric Sildillia | SC Friburgo | Fichaje | — |
| 1 jul 2021 | Lamine Yamal | Barça Cad. A | Fichaje | — |
| 1 jul 2021 | Trevoh Chalobah | Chelsea FC | Fichaje | — |
| 1 jul 2021 | Justin Devenny | Kilmarnock B | Fichaje | — |