BBC Sport understands Khaldoon gave the interview before stories emerged on Tuesday around City’s legal challenge to the Premier League’s commercial rules.
An arbitration hearing surrounding the legality of the league’s associated party transaction (APT) rules, which determine whether sponsorship deals are financially ‘fair’, has been set for 10-21 June.
Khaldoon was asked about the likely impact of financial regulations on this summer’s transfer window given different competitions have different rules. His answer was given without the knowledge City’s present stance would be made public.
“The Premier League got to where it is today by being the most competitive league,” he said. “So, I hope there is a bit more sensibility in regulating. A balanced approach is good from all the leagues.
“There have been a lot of restrictions put in place on swaps and loans, so even that is now much more restricted. That is going to be reflected, I believe, this summer.”
Guardiola has won 15 trophies at the club since his appointment in 2016.
The 53-year-old has one year to run on his current deal, which he signed in November 2022.
The former Barcelona boss suggested after his side’s Premier League title success in May that he could leave the club in 2025, when his contract expires.
“Pep has always been fully committed to this club and to every contract he has signed with us,” said Al-Mubarak.
“This decision on his future is always a decision we take together and I have no doubt we will find the right solution that works for Pep and works for us.”
