On Jorginho, Guardiola added: "I was disappointed (not to sign him)".
Mahrez has been included in Guardiola's squad for City's United States tour, where they will play against Borussia Dortmund, Liverpool and Bayern Munich as they gear up for the new Premier League season.
"For the guy, it would have been a mistake for him and for us if he had made a decision to come here when he wanted to go with Maurizio and Chelsea". If they want to come, that's great but if he wants to go to Chelsea, all the best for him.
Former England keeper Hart, who has been on loan at Torino and West Ham and never played a Premier League game for Guardiola, kept a clean sheet in his 45 minutes on the field after Mario Gotze beat Claudio Bravo with his first-half penalty.
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French carmaker Renault, which does not sell cars in the United States , has said it will remain in Iran despite the sanctions. The EU fears that billions of dollars' worth of trade could be jeopardized as a result of Washington's new sanctions.
"Joe is our player".
So far the tentative interest in Hart - who has 75 England caps, but was left out of the World Cup squad - has come from overseas clubs. The American global was one of the top performers for Borussia Dortmund and caused plenty of problems to Manchester City with his pace and directness in the first half.
"It was really good for their futures because we played one of the best teams in Germany and we did many good things", he said. It was a pleasure to work with them, to do what we've done in the last two seasons, it was like the first day we came. We will try and find solution for him.
Guardiola has challenged last season's PFA Young Player of the Year to prove his worth for both club and country by eclipsing the heights he reached in the previous campaign.
"What happened last season was a effect of the previous season and we will try to come back to the basics and make a good season".