The Express report that the midfielder said of his Champions League opponents: "
"This season, I want to taste victory in the Champions League again. It won't be easy, but that's the ambition.
"All the titles we want to win - to repeat the treble again would be special - and it's on our minds.
Since leaving Barcelona, the Spanish manager has failed to land another Champions League trophy, only reaching the semi-finals with German giants Bayern Munich.
This hasn't stopped Iniesta from praising the impact of his former manger, adding: "City are top of what is one of the most competitive leagues in Europe, and that's where I think they will stay this season.
"They've started well under Pep, even if he's not been happy with the last two or three games.
"They will still be adapting to Pep's style of play and also he's only had one window to bring in his own players.
"They will continue to get stronger under Pep and challenge in both England and Europe."
Guardiola returns to the Camp Nou tonight with Manchester City for their Champions League clash, where he'll come face to face with his former team - and teammate - Luis Enrique.
Barca vs ManCity Head to Head Stats:— Barca Bangladesh (@BarcaBangladesh) October 19, 2016
24-02-15:MC 1-2 FCB
12-03-14:FCB 2-1 MC
18-02-14:MC 0-2 FCB pic.twitter.com/29DsScB8bC