Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 03/2021 |  | Bica | FW |  | Lille OSC B | Lille (CFA) |
| 02/2021 |  | Rocco Ascone | MF |  | Lille OSC U19 | Lille OSC U19 |
| 02/2021 |  | Aguibou Camara | MF | |||
| 02/2021 |  | Mustafa Kapı | MF | | Lille OSC B | Lille (CFA) |
| 01/2021 |  | Ismaïl Bouleghcha | DF | | Lille OSC B | Lille (CFA) |
| 01/2021 |  | Usman Simbakoli | FW | | Lille OSC B | Lille (CFA) |
| 09/2020 |  | Nassim Innocenti | DF | | Lille OSC U19 | Lille OSC U19 |
| 09/2020 |  | Orestis Karnezis | GK |  | SSC Napoli | Napoli |
| 09/2020 | | Adama Soumaoro | DF | |||
| 08/2020 |  | Jonathan David | FW |  | KAA Gent | Gent |
| 08/2020 |  | Show | DF |  | B-SAD | B-SAD |
| 08/2020 |  | Eugenio Pizzuto | MF |  | CF Pachuca | Pachuca |
| 08/2020 | | Burak Yılmaz | FW |  | Beşiktaş | Beşiktaş |
| 07/2020 |  | Sven Botman | DF |  | Jong Ajax | Ajax (J) |
| 07/2020 | | Lucas Chevalier | GK | | Lille OSC B | Lille (CFA) |
| 07/2020 |  | Kouadio-Yves Dabila | DF |  | Cercle Brugge | Cercle |
| 07/2020 | | Rominigue Kouamé | DF |  | ES Troyes AC | ES Troyes AC |
| 07/2020 | | Isaac Lihadji | FW |  | Olympique de Marseille | Marseille |
| 07/2020 |  | Alberto Piernas | AT-C |  | Albacete | Albacete |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2021 | | Usman Simbakoli | FW |  | Stade Lavallois | Laval |
| 01/2021 | | Adama Soumaoro | DF |  | Bologna FC | Bologna |
| 09/2020 |  | Léo Jardim | GK |  | Boavista | Boavista |
| 09/2020 | | Gabriel Magalhães | DF |  | Arsenal FC | Arsenal |
| 08/2020 | | Loïc Rémy | FW |  | Çaykur Rizespor | Rizespor |
| 08/2020 | | Kouadio-Yves Dabila | DF |  | Royal Excel Mouscron | Excel Mouscron |
| 08/2020 | | Show | DF | | Boavista | Boavista |
| 08/2020 |  | Nicolás Gaitán | MF |  | S.C. Braga | S.C. Braga |
| 07/2020 |  | Victor Osimhen | FW | | SSC Napoli | Napoli |
| 07/2020 |  | Virgiliu Postolachi | FW | | Royal Excel Mouscron | Excel Mouscron |
| 07/2020 | | Saad Agouzoul | DF | | Royal Excel Mouscron | Excel Mouscron |
| 07/2020 | | Eric Bocat | DF | | Royal Excel Mouscron | Excel Mouscron |
| 07/2020 |  | Jean Onana | MF | | Royal Excel Mouscron | Excel Mouscron |
| 07/2020 | | Rominigue Kouamé | DF | | ES Troyes AC | ES Troyes AC |