Aguero, who did not face Paraguay or Peru in the last round of matches because of a knee injury, is named to play Uruguay at home on October 12 and Chile away four days later.
Tevez misses out though, with Palmeiras striker Hernan Barcos preferred by Sabella.
Newcastle defender Fabricio Coloccini, Anderlecht midfielder Lucas Biglia and Inter Milan forward Rodrigo Palacio drop out of the squad.
Next week, the former Estudiantes coach will add to the list with a number of players that are involved in the Argentinian Torneo Inicial.
Argentina squad to play Uruguay at home on October 12 and Chile on October 16: Mariano Andujar (Catania), Sergio Romero (Sampdoria); Hugo Campagnaro (Napoli), Federico Fernandez (Napoli), Pablo Zabaleta (Manchester City), Ezequiel Garay (Benfica), Marcos Rojo (Sporting Lisbon); Javier Mascherano (Barcelona), Angel Di Maria (Real Madrid), Fernando Gago (Valencia), Enzo Perez (Benfica), Jose Sosa (Metalist Kharkiv), Pablo Guinazu (Internacional); Lionel Messi (Barcelona), Gonzalo Higuain (Real Madrid), Sergio Aguero (Manchester City), Ezequiel Lavezzi (Paris St Germain), Hernan Barcos (Palmeiras).