Sane will be hoping to feature when City return to action against Fulham on 15 September following the global break.
"He is a gift, to have him".
But Walker broke the deadlock in the 52nd minute by rifling shot from 25 yards out after Sterling dribbled into the area and left it for Sergio Aguero, who instead chose to set up his teammate.
"We have six strikers and I chose to play with two strikers, we have two wingers plus another one on the bench". He is so important.
"We want to express ourselves and sometimes when it happens it is attractive for the people that are watching, but to play in that way you need talented players".
Guardiola will have to rotate his squad when City are playing three games a week.
Kyle Walker's brilliant second-half strike preserved Premier League champions Manchester City's unbeaten start to the season as they secured a battling victory over winless Newcastle.
Having accrued 10 points from a possible 12, City now lie two points behind the leaders.
Blue Jays trade Josh Donaldson to Cleveland Indians
Donaldson, 32, began a rehab assignment with the Class A Dunedin Blue Jays Tuesday after missing three months with a calf strain. Still, those are the only two times Donaldson has appeared in games since May, so he remains something of an unknown for 2018.
"It is normal with this incredible squad (a player can be left out)", said the Brazil global.
And he is adamant that City will only get better as we head into the busy Autumn schedule.
"The other day he had a shot against Wolves which almost hit the corner flag, so it's just a persistence thing", said his fellow defender John Stones.
The Magpies remain winless in their opening four Premier League games this season going into the global break, but there are some encouraging signs for manager Rafael Benitez to work with. "Our opponents have more points than then, Chelsea had dropped points and Liverpool a few". In all the games and Community Shield.
"We will improve", he said.
"After the World Cup, it's impossible to be in best condition".
"That's why we decided this game he wouldn't be there". The mums and dads bring their kids into the schools, they have more order, and we start again.