Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2021 |  | Francisco Conceição | FW |  | FC Porto U19 | FC Porto U19 |
| 01/2021 |  | Ewerton | MF |  | Urawa Red Diamonds | Red Diamonds |
| 10/2020 |  | Malang Sarr | DF |  | Chelsea FC | Chelsea |
| 10/2020 |  | Marko Grujić | MF |  | Liverpool FC | Liverpool |
| 10/2020 | | Felipe Anderson | FW |  | West Ham United | West Ham |
| 10/2020 |  | Nanu | DF |  | CS Marítimo | CS Marítimo |
| 10/2020 |  | Toni Martínez | FW |  | FC Famalicão | FC Famalicão |
| 09/2020 | | Evanilson | FW |  | FC Porto B | FC Porto B |
| 09/2020 |  | Zaidu Sanusi | DF |  | CD Santa Clara | CD Santa Clara |
| 09/2020 |  | Mehdi Taremi | FW |  | Rio Ave FC | Rio Ave FC |
| 08/2020 | | André Pereira | FW |  | Real Zaragoza | Zaragoza |
| 08/2020 | | Cláudio Ramos | GK |  | CD Tondela | CD Tondela |
| 08/2020 |  | Saidy Janko | DF |  | BSC Young Boys | Young Boys |
| 08/2020 | | Carraça | DF |  | Boavista | Boavista |
| 08/2020 | | Vaná | GK | | FC Famalicão | FC Famalicão |
| 08/2020 |  | Yordan Osorio | DF |  | Zenit St. Petersburg | Zenit |
| 08/2020 | | Fernando Andrade | FW |  | Sivasspor | Sivasspor |
| 08/2020 | | José Carlos Monteiro | G-AN |  | CD Aves | CD Aves |
| 07/2020 | | Francisco Meixedo | GK | | FC Porto B | FC Porto B |
| 07/2020 | | Chidozie Awaziem | DF |  | CD Leganés | Leganés |
| 07/2020 | | Diogo Queirós | DF |  | Royal Excel Mouscron | Excel Mouscron |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2021 |  | Shoya Nakajima | FW |  | Al Ain FC | Al Ain FC |
| 01/2021 | | Ewerton | MF |  | Portimonense SC | Portimonense SC |
| 10/2020 | | Diogo Queirós | DF | | FC Famalicão | FC Famalicão |
| 10/2020 |  | Zé Luís | FW |  | Lokomotiv Moscow | Lok Moscow |
| 10/2020 | | Alex Telles | DF |  | Manchester United | Man Utd |
| 10/2020 | | Yordan Osorio | DF |  | Parma Calcio 1913 | Parma |
| 10/2020 | | Tomás Esteves | DF |  | Reading FC | Reading FC |
| 10/2020 | | Danilo | MF |  | Paris Saint-Germain | Paris SG |
| 10/2020 | | Vaná | GK | | FC Famalicão | FC Famalicão |
| 10/2020 | | Fernando Andrade | FW |  | Çaykur Rizespor | Rizespor |
| 10/2020 | | Saidy Janko | DF |  | Real Valladolid | Valladolid |
| 09/2020 | | Tiquinho Soares | FW |  | Tianjin Jinmen Tiger | Tianjin Tiger |
| 09/2020 |  | Vincent Aboubakar | FW |  | Beşiktaş | Beşiktaş |
| 09/2020 | | Vitinha | MF |  | Wolverhampton Wanderers | Wolverhampton |
| 09/2020 | | Chidozie Awaziem | DF | | Boavista | Boavista |
| 09/2020 | | Fábio Silva | FW | | Wolverhampton Wanderers | Wolverhampton |
| 09/2020 | | André Pereira | FW | | Rio Ave FC | Rio Ave FC |
| 09/2020 | | Nélson Duarte | G-AN | | Boavista | Boavista |
| 07/2020 | | André Monteiro | SP-C | | Royal Excel Mouscron | Excel Mouscron |