Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 04/2018 |  | Rodrigo Vaza | DF |  | Sporting CP U19 | Sporting U19 |
| 03/2018 | | Diogo Brás | FW | | Sporting CP U19 | Sporting U19 |
| 01/2018 |  | Filipe Ribeiro | MF |  | Sergipe - SE | Sergipe |
| 12/2017 | | Iuri Medeiros | FW |  | Sporting CP | Sporting |
| 08/2017 | | Fábio Martins | MF |  | Sporting Covilhã | Covilha |
| 07/2017 | | Gonçalo Vieira | DF | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Thierry Correia | DF | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Tiago Djaló | DF |  | Sporting CP U17 | U17 |
| 07/2017 | | Tobias Figueiredo | DF |  | CD Nacional | CD Nacional |
| 07/2017 |  | Ary Papel | MF |  | Moreirense FC | Moreirense |
| 07/2017 | | Daniel Bragança | MF | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Miguel Luís | MF | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Paulinho | MF | |||
| 07/2017 | | Pedro Ferreira | MF | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Wallyson | MF | | Moreirense FC | Moreirense |
| 07/2017 | | Cristian Ponde | FW | | Sporting Covilhã | Covilha |
| 07/2017 |  | Jefferson Encada | FW | | Sporting CP U19 | Sporting U19 |
| 07/2017 | | Kenedy Có | FW |  | SL Benfica U19 | Benfica U19 |
| 07/2017 | | Emanuel Ferro | MA |  | Sporting CP U15 | U15 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2018 |  | Liam Jordan | MF |  | HB Køge | HB Køge |
| 01/2018 | | Tobias Figueiredo | DF |  | Nottingham Forest | Nott'm Forest |
| 01/2018 | | Iuri Medeiros | FW |  | Genoa CFC | Genoa CFC |
| 01/2018 | | Wallyson | MF |  | Vitória Setúbal | Vitória FC |
| 01/2018 | | Gelson Dala | MF |  | Rio Ave FC | Rio Ave FC |
| 08/2017 | | Diogo Nunes | DF |  | Boavista | Boavista |
| 07/2017 |  | Leonardo Ruiz | FW | | Boavista | Boavista |
| 07/2017 |  | Fidel Escobar | DF |  | Sporting San Miguelito | Sporting San Miguelito |
| 07/2017 | | Pedro Empis | DF |  | Académica de Coimbra | Académica |
| 07/2017 | | Ricardo Esgaio | DF |  | S.C. Braga | S.C. Braga |
| 07/2017 | | Chico Geraldes | MF | | Rio Ave FC | Rio Ave FC |
| 07/2017 | | Fábio Martins | MF | | Sporting Covilhã | Covilha |
| 07/2017 |  | Guima | MF | | Académica de Coimbra | Académica |
| 07/2017 | | Matheus Pereira | MF |  | GD Chaves | GD Chaves |
| 07/2017 |  | Bilel Aouacheria | FW | | Sporting Covilhã | Covilha |
| 07/2017 | | Mama Baldé | FW |  | CD Aves | CD Aves |
| 07/2017 | | Elói | FW |  | União Sintrense | União Sintrense |