Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1998 |  | Patrick Videira | MF |  | GD Chaves | GD Chaves |
| 07/1997 |  | Franco | DF |  | Leça FC | Leça FC |
| 07/1997 | | Rogério Matias | DF |  | União Coimbra | União Coimbra |
| 07/1997 | | Damas | MF |  | USC Paredes | Paredes |
| 07/1997 |  | Fernando Aguiar | MF |  | CD Nacional | CD Nacional |
| 07/1997 | | Mateus | MF |  | Rio Ave FC | Rio Ave FC |
| 07/1997 |  | Igor | FW | |||
| 07/1997 | | Moreira de Sá | FW | | Rio Ave FC | Rio Ave FC |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1998 | | Damas | MF |  | Sporting CP | Sporting |
| 10/1997 | | Mateus | MF |  | CD Trofense | Trofense |
| 07/1997 |  | Alex Dyer | DF |  | Huddersfield Town | Huddersfield |