Ramiro López and Sebastián Lomonaco were the first players revealed to be leaving Arsenal de Sarandí at the start of 2019–20, as they agreed moves in June 2019 to Barracas Central and Godoy Cruz respectively.
[7] On 1 July, having trained with the team, Nicolás Giménez (Talleres) and Franco Sbuttoni (Atlético Tucumán) signed for Arsenal.
[13] They met Banfield for their first pre-season match on 3 July, though would lose after conceding three unanswered goals at the Estadio Florencio Sola.
[24][25] Arsenal avoided defeat in friendly matches with Rosario Central, drawing and winning at the Estadio Gigante de Arroyito.
[27] Arsenal sealed their return to the top-flight of Argentine football with a 1–0 victory over Banfield on 29 July, as Ezequiel Rescaldani converted a penalty to gain them three points.
[29] On 1 August, Arsenal revealed that Joel Soñora (Talleres, loan) and Diego Nuñez (San Miguel) were training with the club ahead of potential moves.
[31][32] Arsenal made it back-to-back wins in the Primera División on 5 August, as they came away from Godoy Cruz's Estadio Malvinas Argentinas with all three points thanks to goals from new signings Nicolás Giménez and Joel Soñora.
[34] Arsenal secured nine points from a possible nine in the league on 18 August versus Defensa y Justicia, following strikes by Lautaro Parisi, Gastón Álvarez Suárez and Joel Soñora.
[88] Win Draw Loss Arsenal scheduled a friendly with Claypole for 31 July, with it allowing players who didn't feature in their Primera División opener against Banfield two days prior.