The young Brazilian made his Club debut in Tuesday night’s Papa John’s Trophy trip to Rotherham United, introduced from the bench as a second-half substitute.
Guardiola says it will take time for the new recruit to adapt to life in Manchester, as he looks to get to grips with a new country, culture, language and footballing style.
However, the City boss added the youngster has plenty of support around him, especially from Club captain Fernandinho, whose leadership qualities have once again shone through in his assistance and encouragement.
“He’s so young,” Guardiola said of Kayky. “It’s a new country - completely different than Brazil.
“When Fernandinho came, he came from Shakhtar Donetsk, when Gabriel Jesus came, he was a big star playing big moments in Brazil.
“He needs time - to train and settle with his family. It will be step-by-step. After, what he will show on the pitch will dictate everything.
“It depends on him but he has help from the Club. We support him and Fernandinho is helping him a lot as he always does.
“He knows the Club. He didn’t come for a short period but he has to settle into the rhythms and what we want, and adapt in his development as a player.
“He’s still young but he has everything to improve.”
Hear more from Pep in the video above...
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We will have full coverage of Saturday’s game right here on ManCity.com and on the official Man City app.
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Live text updates will begin in our Matchday Centre at 13:00 (UK).
Our Matchday Live show gets under way just before 14:00 (UK), with Joleon Lescott joining us the studio.
Michael Brown will be providing expert co-commentary alongside Ali Mann for those who wish to have an audio accompaniment with the game.
And CITY+ subscribers can watch a full 90-minute replay of the match from midnight.
CITY+ subscribers can also watch live coverage of our EDS side as they take on Brighton this evening. Kick off in that one is at 19:00 (UK).
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