The Argentina striker has recovered well after breaking a rib in a road accident a fortnight ago and, after returning to light training this week, could have a chance of featuring.
However, Guardiola was coy when asked whether Aguero will come back in to the squad for the visit of the Potters on Saturday, claiming he is not fully fit.
"He has had his first training session and he did quite well. Maybe he could be back for tomorrow," said the Spaniard.
"He’s not 100%, he explained what would happen, what would have happened, now we are happy he is back to training."
Captain Kompany is still out with a calf injury but City have no fresh injuries following the international break. Left-back Benjamin Mendy (knee) is a long-term casualty.
Provisional squad: Ederson, Bravo, Walker, Danilo, Stones, Otamendi, Mangala, Delph, Toure, Gundogan, Fernandinho, De Bruyne, D Silva, B Silva, Sterling, Sane, Foden, Diaz, Aguero, Jesus.