Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1921 |  | Fermín Uriarte | DF | |||
| 01/1921 | | Hector Castro | FW | |||
| 01/1921 | | Luis Villazú | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1921 | | José Nasazzi | DF |  | Roland Moor | Roland Moor |
Lito
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1921 | | Fermín Uriarte | DF | |||
| 01/1921 | | Hector Castro | FW | |||
| 01/1921 | | Luis Villazú | FW |
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1921 | | José Nasazzi | DF | | Roland Moor | Roland Moor |