| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Quentin Benaets | Zébra Élites | Fichaje | Sin coste |
| 1 jul 2021 | Medon Berisha | BSC Young Boys U21 | Fichaje | — |
| 1 jul 2021 | Elias Jelert | FC Copenhagen | Fichaje | — |
| 1 jul 2021 | Jorrel Hato | Ajax U17 | Fichaje | — |
| 1 jul 2021 | Lucas Noubi | Standard U21 | Fichaje | — |
| 1 jul 2021 | Mischa Eberhard | BSC Young Boys | Fichaje | Sin coste |
| 1 jul 2021 | Adrián Emmanuel Martínez | Cerro Porteño | Cesión | — |
| 1 jul 2021 | Pablo Arriaza | Málaga CF U19 | Fichaje | — |
| 1 jul 2021 | Yanis Eisschill | SK ADmira Linz | Fichaje | Sin coste |
| 1 jul 2021 | Álex Calatrava | UE Costa Brava (- 2022) | Fichaje | — |
| 1 jul 2021 | Charles | FC Midtjylland | Fichaje | €1.5M |
| 1 jul 2021 | Filip Milojevic | AKA Vorarlberg U18 | Fichaje | Sin coste |
| 1 jul 2021 | Lamine Yamal | FC Barcelona U16 | Fichaje | — |
| 1 jul 2021 | Brian Brobbey | RB Leipzig | Fichaje | — |
| 1 jul 2021 | Oumar Ngom | FC Chamois Niort B | Fichaje | — |
| 1 jul 2021 | Rayan Bamba | Stade Rennais FC U19 | Fichaje | — |
| 1 jul 2021 | Tiago Gabriel | Setúbal U19 | Fichaje | — |
| 1 jul 2021 | Pius Dorn | FC Thun | Fichaje | Sin coste |
| 1 jul 2021 | Nathan Buayi-Kiala | LOSC Lille U19 | Fichaje | — |
| 1 jul 2021 | Scott Tanser | St. Mirren FC | Fichaje | — |
| 1 jul 2021 | Gonçalo Oliveira | SL Benfica U17 | Fichaje | — |
| 1 jul 2021 | Kieron Tom Bowie | Fulham U23 | Fichaje | — |
| 1 jul 2021 | Furkan Dursun | AKA Rapid Wien U18 | Fichaje | Sin coste |
| 1 jul 2021 | Omari Hutchinson | Arsenal U21 | Fichaje | — |
| 1 jul 2021 | Nikolas Muci | FC Lugano | Fichaje | Sin coste |
| 1 jul 2021 | Jaden Philogene | Aston Villa FC | Fichaje | — |
| 1 jul 2021 | Ignacio Monsalve Vicente | ŁKS | Fichaje | — |
| 1 jul 2021 | Alexi Koum | AJ Auxerre U17 | Fichaje | — |
| 1 jul 2021 | Thierno Barry | FC Sochaux-Montbéliard B | Fichaje | — |
| 1 jul 2021 | Jan Plug | Feyenoord U17 | Fichaje | — |
| 1 jul 2021 | Sergio Rodelas | Granada CF U19 | Fichaje | — |
| 1 jul 2021 | Matthis Abline | Stade Rennais FC | Fichaje | — |
| 1 jul 2021 | Caspar Jander | MSV Duisburg U19 | Fichaje | Sin coste |
| 1 jul 2021 | Teo Quintero León | CE Sabadell FC | Fichaje | — |
| 1 jul 2021 | Leonardo Colombo | Monza Primavera | Fichaje | — |
| 1 jul 2021 | Álvaro Cortés | Barça Juv. B | Fichaje | — |
| 1 jul 2021 | Phillip Böhm | SSV Jahn Regensburg II | Fichaje | Sin coste |
| 1 jul 2021 | Michal Sadílek | PSV Eindhoven | N/A | N/A |
| 1 jul 2021 | Tim Caroutas | Cornellà Juv. A | Fichaje | — |
| 1 jul 2021 | Tiago Parente | Estoril Praia U23 | Fichaje | — |