While brilliant coaching like Pep Guardiola's can take a team a long way, if there are issues of cheating or foul play in the club, it tarnishes the sport and the team's reputation. In such a scenario, the responsible action would indeed be for those implicated to step down.
Absolutely, I agree with you. No matter how brilliant a team's coach is, integrity is paramount in any sport, including football. Any violation could indeed tarnish the reputation of the team and the sport itself. It's crucial that the parties involved in any form of unfair play take responsibility for their actions.