U. de Chile U21: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-01-01 | Agustín Arce | U. de Chile U21 | U. de Chile | — |
| 2024-08-22 | Agustín Arce | U. de Chile U21 | San Luis | Loan |
| 2022-01-01 | Lucas Assadi | U. de Chile U21 | U. de Chile | — |
| 2022-01-01 | Darío Osorio | U. de Chile U21 | U. de Chile | — |
| 2022-01-01 | Agustín Arce | U. de Chile U18 | U. de Chile U21 | — |
| 2021-03-06 | Maximiliano Guerrero | U. de Chile U21 | La Serena | Free |
| 2021-01-01 | Lucas Assadi | U. de Chile U18 | U. de Chile U21 | — |
| 2020-01-08 | Maximiliano Guerrero | U. de Chile U21 | Rangers Talca | Loan |
| 2019-01-01 | Maximiliano Guerrero | U. de Chile U21 | La Serena | Loan |
| 2018-01-01 | Nicolás Guerra | U. de Chile U21 | U. de Chile | — |
| 2017-01-01 | Taty Castellanos | U. de Chile U21 | U. de Chile | — |
| 2017-01-01 | Maximiliano Guerrero | La Serena U21 | U. de Chile U21 | — |
| 2015-07-28 | Moisés Villarroel | Club Blooming | U. de Chile U21 | Loan |
| 2014-07-01 | Rodrigo Echeverría | U. de Chile U21 | U. de Chile | — |
| 2012-01-01 | Ángelo Henríquez | U. de Chile U21 | U. de Chile | — |
| 2012-01-01 | Igor Lichnovsky | U. de Chile U21 | U. de Chile | — |
| 2011-01-01 | Luis Felipe Gallegos | U. de Chile U21 | U. de Chile | — |