Francisco González Metilli sealed his loan departure from Argentinos Juniors on 18 June 2019, as he penned terms with newly-promoted Primera B Nacional team Estudiantes (BA).
[2][3] They played Huracán in a friendly double-header on 26 June, losing the initial match 3–0 prior to winning the secondary encounter thanks to a goal from Iván Colman.
[6][7] Estudiantes (BA) were met in two pre-season matches on 29 June, with both encounters ending in 1–1 draws; Colman and youngster Lucas Ambrogio scored for them.
[8][9] Gastón Machín and Leonardo Pisculichi terminated their contracts in June, subsequently sealing moves to Segunda División B side Burgos.
[16] Argentinos drew in an away friendly with Gimnasia y Esgrima on 3 July, before winning game two that day thanks to goals from Raúl Bobadilla and Elías Gómez.
[19] Gabriel Hauche and Elías Gómez netted in narrow exhibition match wins over Arsenal de Sarandí on 6 July.
[21][22] Colón, also of the Primera División, were Argentinos' first competitive opponents of 2019–20, as they met in the first leg of a Copa Sudamericana knockout tie in Santa Fe on 11 July.
[35][36] It was reported, on 14 August, that new signing Santiago Silva had been provisionally suspended after he had failed a drugs test back in April whilst with Gimnasia y Esgrima.
[39] Argentinos continued their undefeated start in the Primera División with a victory over Banfield on 16 August, with Gabriel Hauche grabbing the decisive goal.
[40] Argentinos fought San Martín in the Copa Argentina in Salta on 21 August, with El Bicho progressing on penalties at the Estadio Padre Ernesto Martearena.