Walker shot wide for the visitors while a Sane effort was well saved by Butland, before a controversial moment in the 80th minute when Sterling dispossessed Ndiaye from a drop ball which Stoke thought they would be allowed to play after the game was stopped for injuries.
Jadon Sancho joined Borussia Dortmund from Manchester City in summer, while Ademola Lookman and Reece Oxford are on loan at RB Leipzig and Borussia Monchengladbach respectively.
Sergio Aguero is set to miss Manchester City's Premier League fixture against relegation-threatened Stoke on Monday, after sustaining a knee injury in training.
Stoke have now managed just three goals in their past six games, and carried sporadic threat in a game that was effectively a free hit with no one expecting a result against the champions-elect.
"To motivate my players is really easy, we are not champions yet, and when we are, we must carry on, to focus on the next goals which is the Champions League quarter-finals", said Guardiola.
"Sometimes you have to hold your hands up - that's why they're going to win the league and are in the race to win the Champions League".
"We have one more game before United and then we'll see".
Asked about the ribbon in that press conference, Guardiola said: "I respect the FA".
"I don't like to play on Monday because at the weekend everybody is involved".
City have now scored 85 Premier League goals this season - only 11 teams have ever scored more in a completed Premier League campaign. And it's probably not too much a stretch of the imagination to suggest they probably didn't concede possession either!
"If we try to play football the same way they do then we will be beaten - that's the reality".
"He wants to know what happens but always accepts whatever I, Txiki and Ferran decide".
The largely dominant Man City extended their lead in the 50th minute, with Silva managing to beat Bauer as he went on to score past a helpless Butland. "Last season we were there and it was good and that's why we're going to the airport now".
"In the bad moments, I saw how the club reacted and supported me and when I wanted to talk about plans for the future, they were there".