Guardiola is under contract at Manchester City until June 2021 but his future is in doubt after Uefa handed the club a two-year ban from European competition for breaching Financial Fair Play rules, a ruling City have appealed.
“I would very much like Guardiola to come back, but now he is at City and it is a decision that Pep should take. He is a benchmark for Barcelona and many Catalans would like him to coach Barca again.
“At the right time, I will speak to the person we think should be a Barca coach from 2021.”
Barcelona won 14 trophies – including three league titles and the Champions League twice – during Guardiola’s reign before his exit in 2012.
Spanish football is currently suspended due to the COVID-19 pandemic but Barcelona have been in turmoil since six directors resigned in April in protest at the way the club was being run.