With each passing year throughout his eight-year spell with City the Spaniard has grown into a more complete player.
They defeated Chelsea 2-0 but it should have been a bigger winning margin.
"I didn't expect that level in that period after a short, short training session, like from Fernandinho, Sergio - a lot of them".
Guardiola's teams are known for keeping lion's share of possession in every game they play irrespective of the opponent. "It's complicated for all of them but they are such competitive guys. My hat's off to them".
"I believe we can keep them here and keep them happy, but we will only see when we sit down with them".
"Now we focus on Arsenal".
"Kyle Walker trained just two training sessions", Guardiola said.
As Chelsea looked to move forward, Callum Hudson-Odoi embarked on a threatening run before he was tackled - but that proved only to be the prelude to a City breakthrough.
Blues boss Sarri, hired to replace the sacked Antonio Conte last month, endured a miserable debut in the prestigious friendly at Wembley as lacklustre Chelsea were swept aside by Premier League champions City.
"Everybody knows the wingers want to compete". Maybe he needs a little bit more time to take his physical condition.
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"We would like to be more intense in the pressing, but it was impossible because the players were absolutely exhausted".
In between there was a rare miss, with Aguero hitting the side-netting after rounding Chelsea keeper Willy Caballero, but make no mistake, City's goal machine is looking sharp and the golden boot will surely be in his sights.
"We were really impressed when he arrived".
As clichéd as it may sound, the Italy worldwide may take time to adapt, not necessarily physically, but mentally and to the intensity with which even the supposedly weaker teams will shut him down.
"It is not good for any manager around the world so all the managers try to avoid that feeling when you lose a game". The 23-year-old England global scored 18 goals in 33 appearances and assisted 11 more for his team-mates.
The deep-lying playmaker was a key figure for Sarri in Serie A, making more passes than anyone else in the top five leagues last season.
"No, it won't", said Guardiola.
It's not going to be an easy start to Sarri's reign, with doubts surrounding the future of star players Thibaut Courtois, Eden Hazard and Willian and with World Cup victor, Olivier Giroud, also rumoured to be on his way out, but Chelsea fans could be in for a treat this season.
The protracted negotiations to bring Sarri in from Napoli severely restricted his time to start implementing his philosophy on the Blues - he was only appointed three weeks ago. The Italian did, however, say that he wants to stay at Stamford Bridge for long.
City were not letting up and the second came on 58 minutes in the second half as Aguero slipped home Phil Foden's pass after Chelsea's attack broke down in the middle. There was a disjointed pre-season feel to the Londoners. Pep Guardiola's team were in total control against a Chelsea side definitely missing the tiresome workrate of N'Golo Kante. It's not very easy.
"The future of Hazard, Willian (below) and the rest of the players defend on the club, not just me", continues Sarri.