But afterwards, Guardiola said he was impressed with the performances of Brahim Diaz, Douglas Luiz and Luke Bolton on a warm evening at Soldier Field.
Speaking ahead of City's International Champions Cup clash with Borussia Dortmund, Guardiola spoke on his side's failure to sign Jorginho for the first time.
"Manchester City players and staff departed for the club's summer tour of the United States earlier (on Tuesday)", City confirmed on their official website.
Guardiola was forced to pick a mixed team that included youngsters and a number of players that spent last season out on loan including Joe Hart, Jason Denayer and Patrick Roberts.
The Premier League champions started the better of the two sides with England Under-21 global Jack Harrison making an impression in the final third but at the other end, City were indebted to Michael Bolton making a timely block to prevent a Dortmund opener.
Hart has 12 months remaining on his Manchester City contract and following loan spells to Torino and West Ham, there is an appetite on all sides to secure the England worldwide a permanent deal away from the Etihad Stadium this summer.
Guardiola admits Man City missed out on ‘an exceptional player’ in Jorginho
Guardiola has already said he will help the 31-year-old find a new club.
Guardiola complained last season about a lack of protection from referees for his players and was anxious by Dortmund's approach.
"We decided today on Claudio and Joe".
"That is the most important thing in that period and then as soon as people come back we will know what we need for the first games against Chelsea and Arsenal".
Guardiola also said of City winger Leroy Sane being left out of Germany's World Cup squad: "Maybe this decision will make him stronger".
"He is a player who is one of the most incredible professionals I have ever met. They are coming back step by step".