| Fecha | Jugador | Llega a | Tipo | Precio |
|---|---|---|---|---|
| 1 jul 2021 | Jesús Cruz | Club Deportivo Altair U16 | Fichaje | — |
| 1 jul 2021 | Ismail Ka | Feyenoord Youth | Fichaje | — |
| 1 jul 2021 | Miguel Auría Olazábal | Osasuna Juv A | Fichaje | — |
| 1 jul 2021 | Julen Jon Guerrero | R. Madrid Juv.B | Fichaje | — |
| 1 jul 2021 | Iyad Mohamed | AJ Auxerre | Fichaje | Sin coste |
| 1 jul 2021 | Martim Marques | Sporting CP U23 | Fichaje | Sin coste |
| 1 jul 2021 | Aingeru Olabarrieta | Athletic Juv. B | Fichaje | — |
| 1 jul 2021 | Clément Akpa | AJ Auxerre B | Fichaje | — |
| 1 jul 2021 | Juanma Herzog | L.Palmas Juv. A | Fichaje | — |
| 1 jul 2021 | James McConnell | Liverpool FC U18 | Fichaje | — |
| 1 jul 2021 | Lilian Brassier | Stade Brestois 29 | Fichaje | €1.8M |
| 1 jul 2021 | Lucas Monteiro | Oud-Heverlee Leuven U18 | Fichaje | Sin coste |
| 1 jul 2021 | Johaneko Louis-Jean | FC Girondins Bordeaux B | Fichaje | — |
| 1 jul 2021 | Rayan Touzghar | Toulouse FC B | Fichaje | Sin coste |
| 1 jul 2021 | Félix Lemaréchal | AS Monaco U21 | Fichaje | Sin coste |
| 1 jul 2021 | Skye Vink | Ajax U17 | Fichaje | — |
| 1 jul 2021 | Antoine Hainaut | US Boulogne | Fichaje | — |
| 1 jul 2021 | Naim García | CD Leganés | Fichaje | — |
| 1 jul 2021 | Rodrigo Ribeiro | Sporting CP U19 | Fichaje | — |
| 1 jul 2021 | Kayne van Oevelen | Volendam U21 | Fichaje | — |
| 1 jul 2021 | Malcolm John Matarr Jeng | IK Sirius Jgd. | Fichaje | — |
| 1 jul 2021 | Rome-Jayden Owusu-Oduro | AZ U18 | Fichaje | — |
| 1 jul 2021 | Kyrell Wilson | Swansea City U18 | Fichaje | Sin coste |
| 1 jul 2021 | Michael Schweiger | AKA Wolfsberger AC U18 | Fichaje | Sin coste |
| 1 jul 2021 | Ngal'ayel Mukau | KV Mechelen U21 | Fichaje | — |
| 1 jul 2021 | Nicolás Capaldo | Red Bull Salzburgo | Fichaje | — |
| 1 jul 2021 | Nicolas Wimmer | SK Austria Klagenfurt | Fichaje | Sin coste |
| 1 jul 2021 | Miguel Barandalla Ostiz | Athletic Juv. A | Fichaje | — |
| 1 jul 2021 | Srdjan Kuzmic | ND Ilirija 1911 | Fichaje | — |
| 1 jul 2021 | Nacho Martín | Sporting Atlético | Fichaje | — |
| 1 jul 2021 | Sven Simons | PSV U18 | Fichaje | — |
| 1 jul 2021 | Anthony Smits | AZ Alkmaar U17 | Fichaje | Sin coste |
| 1 jul 2021 | Gabriele Guarino | Empoli Primavera | Fichaje | Sin coste |
| 1 jul 2021 | Filipe Relvas | Portimonense SAD | Fichaje | — |
| 1 jul 2021 | Mattie Pollock | Watford FC | Fichaje | €300k |
| 1 jul 2021 | Daniel Jebbison | Sheffield United | Fichaje | — |
| 1 jul 2021 | Mauro Furtado | SL Benfica U15 | Fichaje | — |
| 1 jul 2021 | Abu Kamara | Norwich City U23 | Fichaje | — |
| 1 jul 2021 | Mohamed Wael Derbali | Olympique Beja | Fichaje | Sin coste |
| 1 jul 2021 | Ekain Orobengoa | Real Sociedad U19 | Fichaje | — |