Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1991 |  | Jorge Theiler | DF |  | FC St. Gallen | St.Gallen |
| 01/1991 | | Darío Decoud | FW | |||
| 01/1991 | | Claudio Spontón | FW |  | Platense | Platense |
| 07/1990 | | Rúben Gómez | DF |  | Argentinos Juniors | Arg. Juniors |
| 07/1990 | | Gabriel Medina | DF | |||
| 07/1990 | | Juan Amador Sánchez | DF | | Platense | Platense |
| 07/1990 | | Sergio Berti | MF |  | Boca Juniors | Boca Juniors |
| 07/1990 | | Ornaldo Claut | MF | |||
| 07/1990 | | Daniel Gutiérrez | MF | |||
| 07/1990 | | Juan José Rossi | MF |  | UANL Tigres | Tigres |
| 07/1990 | | Diego Claudio Siciliano | MF | |||
| 07/1990 | | Ariel Beltramo | FW |  | Lanús | Lanús |
| 07/1990 | | Fernando Castro | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1991 |  | Hugo De León | DF |  | Nacional | Nacional |
| 01/1991 | | José Serrizuela | DF |  | Atlético San Luis | San Luis |
| 01/1991 | | Ernesto Corti | MF |  | Deportivo Toluca | Toluca |
| 01/1991 | | Gabriel Batistuta | FW | | Boca Juniors | Boca Juniors |
| 09/1990 | | Ángel Comizzo | GK | | UANL Tigres | Tigres |
| 07/1990 | | Sergio Batista | MF | | Argentinos Juniors | Arg. Juniors |
| 07/1990 | | Ramón Centurión | MF |  | Estudiantes | Estudiantes |
| 07/1990 | | Héctor Enrique | MF |  | Deportivo Español | Español |
| 07/1990 | | Gustavo Poyet | MF |  | Real Zaragoza | Zaragoza |
| 07/1990 | | Fabio Talarico | MF |  | AS Cannes | AS Cannes |
| 07/1990 | | Julio Zamora | FW |  | Newell's Old Boys | Newell's OB |