Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1991 |  | Carlos Ferreira | DF | |||
| 07/1991 | | Luís Carlos | MF | |||
| 07/1991 | | Zezinho | MF |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1991 | | João Pinto | DF |  | Campomaiorense | Campomaiorense |
Oriental de Lisboa
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1991 | | Carlos Ferreira | DF | |||
| 07/1991 | | Luís Carlos | MF | |||
| 07/1991 | | Zezinho | MF |
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1991 | | João Pinto | DF | | Campomaiorense | Campomaiorense |