On 14 August 2017, Echagüe joined Defensores Unidos of Primera C Metropolitana.[2][8][9] After promotion in his first season, a late cameo in a 1–0 loss away to UAI Urquiza on 19 August saw the midfielder make his bow in Primera B Metropolitana; with his first goal coming in the succeeding September versus Almirante Brown.[2] He departed Defensores at the end that season, prior to securing a return to Defensores de Pronunciamiento in July 2019.[2]