The 47-year-old is committed to City until 2021 having agreed a contract extension during the summer but, long term, taking charge of a national side in a major tournament appeals.
There's a lot of nice strikers and midfield players and the season will be judged in 11 months, not just in three weeks or one month.
"But this season, Bernardo Silva was the first one".
"But actually, if I am Pep, I have other players, senior players, who I have to get up to speed because they haven't had many match minutes".
Delph, 28, has won seven worldwide caps since he last kicked a ball in anger for City, in the final game of last season.
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"I was at Manchester City against Huddersfield and you think: "Well, OK, it is a game where Foden will play", said Southgate. Sometimes, for some players, it's that way [a slow start]. "The most important thing and the most important issue we have is to help them to grow".
Guardiola and City want Sterling - who has entered the final two seasons of his current deal - to sign a contract extension.
Speaking generally about worldwide management, Guardiola, who was linked with the Argentina job in the summer, said: 'In our lives we have dreams of what we'd like to do in the future, but it doesn't mean it's going to happen.
"The club asked me my opinion and we shared our opinions and, after that, it is the club and the agent".
"He's here. If he was not ready, he would not be here", Guardiola said. "It's important that Raheem and his people know how delighted we are with him and after that maybe it happens or maybe not".
"Here [City] I feel very good, very protected from football", he said.