Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 10/2021 |  | Santiago Bravo | DF |  | Colo-Colo U17 | U17 |
| 10/2021 | | Francisco García | DF | |||
| 10/2021 | | Matías Pinto | DF | |||
| 10/2021 | | Nicolás Suárez | DF | |||
| 10/2021 | | Miguel Toledo | DF | |||
| 10/2021 | | Danilo Díaz | MF | |||
| 10/2021 | | Erick Ottesen | MF | |||
| 10/2021 | | Diego Plaza | MF | |||
| 10/2021 | | Damián Pizarro | FW |  | Colo-Colo U20 | U20 |
| 10/2021 | | Francisco Rivera | FW | |||
| 10/2021 | | Felipe Yáñez Parra | FW | |||
| 09/2021 |  | Christian Santos | FW | |||
| 07/2021 | | Benjamín Morales | GK | |||
| 07/2021 | | Byron Molina | MF | |||
| 04/2021 |  | Emiliano Amor | DF |  | Vélez Sarsfield | Vélez Sársfield |
| 03/2021 |  | Leonardo Gil | MF | |||
| 03/2021 | | Bruno Gutiérrez | DF |  | Deportes Iquique | Deportes Iquique |
| 03/2021 | | Felipe Fritz | FW |  | Unión Española | Unión Española |
| 03/2021 | | Juan Gaete | FW |  | Cobresal | CD Cobresal |
| 02/2021 | | Omar Carabalí | GK |  | San Luis | San Luis |
| 01/2021 | | Miiko Albornoz | DF | |||
| 01/2021 | | Darko Fiamengo | DF | | Colo-Colo U20 | U20 |
| 01/2021 | | Nicolás Garrido | DF | | Colo-Colo U20 | U20 |
| 01/2021 | | Daniel Gutiérrez | DF | | Colo-Colo U17 | U17 |
| 01/2021 | | Fabian Alvarado | MF | |||
| 01/2021 | | Jorge Araya | MF |  | Palestino | Palestino |
| 01/2021 | | Dylan Portilla | MF | |||
| 01/2021 | | Martín Rodríguez | MF |  | Mazatlán FC | Mazatlán FC |
| 01/2021 | | Lucas Soto | MF | |||
| 01/2021 | | Jordhy Thompson | FW |
