Der Spiegel claim the investigation is focused on three separate allegations, which it has provided detail on.
Mansour could face sanctions like Abramovich, due to his ties with the Syrian president.
No guesses for top spot. Welcome to a pretty depressing group, Mohamed bin Salman.
Manchester City posted record revenue of £535million and a profit - £10.1m - for the fifth consecutive year.
Man City's owners are brazenly trying to "sportswash" Abu Dhabi's "deeply tarnished image"...
Manchester City owner Sheikh Mansour has told fans the club are only "half way up our Everest".