Stones, Walker, and Ruben Dias have been side-lined with injury recently, and all three looked to have had their seasons curtailed early.
However, England pair Stones and Walker returned to training on Thursday morning and the City boss confirmed there is a chance both might feature in some form on Sunday.
“We have incredible doctors and physios,” said Guardiola.
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“They have trained today. We will see tomorrow. It is good for us to have them back.”
Asked if there were any further injury problems within his squad, Guardiola added: “No, I don’t think so.”
City need to win against Steven Gerrard’s side to secure a fourth Premier League title in five seasons.
Guardiola admits he gets the most satisfaction from being league champions because of the marathon effort is takes to cross the finish line first.
“It is more difficult (to win the Premier League),” said Pep.
“There are lots of weeks, games, struggles with injuries and bad moments, tough opponents.
“The success is being there all the time in the last five years except the year when Liverpool were unstoppable.
“It’s every day, when you fight the Premier League and fight until the end, it gives you happiness.
“You are happier when you win and you win. It’s not a cup, it’s a routine.
“Doing a routine is most difficult in our lives. If you are not happy, you want these great experiences. Premier League is routine.”
