Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1999 |  | Júlio | FW |  | GD Estoril | Estoril |
| 01/1999 |  | Kenedy | MF | |||
| 07/1998 | | Hilário | GK |  | FC Porto | FC Porto |
| 07/1998 | | Luís Vasco | GK |  | GD Chaves | GD Chaves |
| 07/1998 | | Pedro Duarte | GK | |||
| 07/1998 | | Marinho | DF |  | FC Alverca | FC Alverca |
| 07/1998 | | Miguel | DF | |||
| 07/1998 | | Carlitos | MF |  | S.C. Braga | S.C. Braga |
| 07/1998 | | Hélder Quental | MF | | GD Estoril | Estoril |
| 07/1998 |  | Roberto Assis | MF |  | Sporting CP | Sporting |
| 07/1998 | | Vítor Vieira | MF | | GD Chaves | GD Chaves |
| 07/1998 | | Gilberto | FW | |||
| 07/1998 |  | Leonson Lewis | FW | | GD Chaves | GD Chaves |
| 07/1998 | | Stênio | FW | |||
| 07/1998 | | Jorge Jesus | MA |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1999 | | Roberto Assis | MF |  | Hokkaido Consadole Sapporo | Consadole |
| 01/1999 | | Eric Gaúcho | FW |  | CD Ourense | CD Ourense |
| 08/1998 | | Paulo Santos | GK | | FC Alverca | FC Alverca |
| 08/1998 | | Alexandre | MF |  | Oriental de Lisboa | Oriental |
| 07/1998 | | Xavier | GK |  | CD Nacional | CD Nacional |
| 07/1998 | | Filipe Martins | DF | | GD Estoril | Estoril |
| 07/1998 |  | Alberto Bodelón | MF |  | Cultural Leonesa | CD Leonesa |
| 07/1998 | | Chaínho | MF | | FC Porto | FC Porto |
| 07/1998 | | Mário Jorge | MF |  | CD Leganés | Leganés |
| 07/1998 |  | Mauro Airez | FW | | GD Estoril | Estoril |
| 07/1998 | | Renato | FW |  | Os Belenenses | Belenenses |
| 07/1998 |  | Jasminko Velić | FW | | CD Leganés | Leganés |
| 07/1998 | | Fernando Santos | MA | | FC Porto | FC Porto |