Manchester City boss Pep Guardiola says he's yet to decide on which young players will be released for loan.

Both Phil Foden and Brahim Diaz started as City kicked off their pre-season with a 1-0 defeat to Borussia Dortmund in Chicago on Saturday.

"We will decide on them at the end of pre-season," said City boss Guardiola.

"As soon as people come back we will know what we need for the games against Chelsea [in the Community Shield] and Arsenal."

City were without all of their 16 World Cup players for the game against Dortmund, but Joe Hart played 45 minutes of the match.