UEFA and FIFA will act if allegations of financial impropriety made against Manchester City prove accurate, according to manager Pep Guardiola.
The reigning Premier League champions entertain rivals Manchester United at the Etihad Stadium on Sunday, having scored six times in each of their home games against Southampton and Shakhtar Donetsk over the past week.
Events away from the field have proved potentially more problematic.
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German magazine Der Spiegel made a number of claims against City in a series of four articles, which are based on documents purportedly attained from whistleblowers Football Leaks.