Aguero broke a rib in a car crash just two weeks ago.
Guardiola told the media on Friday: "He did his first training session, after what happened.
"He did it quite well. Hopefully, as soon as possible, he will be back.
"Maybe (he will feature against Stoke). Today, in the last training session, we are going to see.
"Of course, he is not 100 per cent but he recovered quite well.
"We will see. We are happy he is back in training."