On 2 July 2021, Cordero joined Unión de Santa Fe on a loan deal until the end of 2022 with a purchase option.[5] However, due to lack of playing time, Unión confirmed at the end of January 2022, that the spell had been cut short and Cordero would return to Huracán.[6] During his stay at Unión, he played 14 games, in which 9 were as a starter, converting two goals: one against Godoy Cruz, and the following date, a penalty kick on April 15 against Argentinos Juniors.
International career
Cordero received a training call-up to the Argentina U19 squad in February 2018.[7]