Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2004 |  | Dario Cajaravilla | DF |  | Aldosivi | CA Aldosivi |
| 07/2004 |  | Ismael Fuentes | DF |  | Rangers | Rangers |
| 07/2004 | | Felipe Muñoz | DF | |||
| 07/2004 | | Matías Fernández | MF | |||
| 07/2004 | | Adrián Fernández | FW |  | El Porvenir de Gerli | El Porvenir |
| 07/2004 | | Felipe Flores | FW | |||
| 07/2004 | | Germán Real | FW |  | Unión de Santa Fe | Unión |
| 07/2004 | | Marcelo Verón | FW |  | AD Ceuta | ADA Ceuta |
| 01/2004 | | Carlos Cisternas | DF | |||
| 01/2004 | | Miguel Ramírez | DF |  | Universidad Católica | U. Católica |
| 01/2004 | | Cristián Gálvez | MF |  | Santiago Wanderers | Wanderers |
| 01/2004 | | Francisco Huaiquipán | MF |  | CD Magallanes | CD Magallanes |
| 01/2004 | | Hernan Maldonado | MF | |||
| 01/2004 | | Rodrigo Viligrón | MF |  | Cobresal | CD Cobresal |
| 01/2004 | | Juan Lorca | FW | |||
| 01/2004 |  | Ronaille Calheira | FW | |||
| 01/2004 | | Joel Soto | FW |  | Gallos Blancos | Querétaro |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2004 | | Eduardo Lobos | GK |  | Audax Italiano | Audax Italiano |
| 07/2004 | | David Henríquez | DF |  | Atlético Morelia | Morelia |
| 07/2004 | | Cristián Gálvez | MF | | Cobresal | CD Cobresal |
| 07/2004 | | Leandro Grech | MF |  | Club Aurora | Club Aurora |
| 07/2004 | | Francisco Huaiquipán | MF |  | Atlante UTN | Potros Neza |
| 07/2004 | | Braulio Leal | MF |  | Vitória Guimarães | Vitória SC |
| 07/2004 | | Rodrigo Viligrón | MF | | Cobresal | CD Cobresal |
| 07/2004 |  | Silvio Fernandez | FW |  | Universidad de Concepción | Universidad de Concepción |
| 07/2004 | | Manuel Neira | FW | | Gallos Blancos | Querétaro |
| 07/2004 | | Joel Soto | FW |  | Puebla FC | Puebla |
| 07/2004 | | Juan Úbeda | FW |  | Ciudad de Murcia | Ciudad de Murcia |
| 03/2004 | | Marco Villaseca | MF |  | FK Rostov | FK Rostov |
| 01/2004 | | Cristián Gómez | DF | | Universidad de Concepción | Universidad de Concepción |
| 01/2004 | | Joel Reyes | MF | | Universidad de Concepción | Universidad de Concepción |
| 01/2004 | | Luis Díaz | FW | | Rangers | Rangers |