City won 2-1 late on after Saints had taken the lead on Saturday.
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Guardiola admitted afterwards: "I learn in this country, after a day off, the team play better.
"They have to train, of course, but they have to arrive fresh and I have learnt that. When I first arrived, we trained a lot, now home and quality time.
"Plenty of quality of time and then they are ready."
He added: "We have eight days until we go to Liverpool to face Everton so I have time. The players can do whatever they want (on their days off). If they want to travel to wherever, they are completely free.
"So long as they arrive Wednesday afternoon for training, it is fine."