UEFA President Aleksander Ceferin has vowed the governing body will not shy away from sanctions against the big clubs including Manchester City amid fears of a ban from the Champions League.

City have been under investigation by a regulatory committee over a series of leaks into their financial conduct published in German outlet Der Spiegel.

Reports last week suggested City may face a Champions League ban if found guilty with UEFA referring the case to Club Financial Control Body adjudicatory chamber.

City have dismissed any wrongdoing and branded the accusations “entirely false”, maintaining their hope of a positive outcome.

The investigation is set to rumble on for weeks if not months and while Ceferin refused to comment on the individual case, he insists UEFA will have no qualms about coming down hard on any club, report the Daily Mirror.

“Sometimes we forget how dirty this industry is,” Ceferin told the New York Times.

City were fined and hit with a restriction on transfer spending after an initial breach in 2014 while PSG’s dealings have also been investigated.

There have been fears European heavyweights such as City and PSG would manage to avoid a heavy sanction, while lesser names wouldn’t be as fortunate.

But Ceferin added: “If you do it right, you don’t sell yourself.

“If you are not involved in any strange business, if you are not corrupted, then you go straight forward and be fair to anyone.”