I know I've said it on here before but the news WAS whispered about beforehand, by quite a few weeks. I can't quite remember the details but I do remember seeing that "ARabian News" article (I think it was late at night on the 31st August) and thinking "So the rumour IS true". Got into work the next morning and all the office blues were buzzing with it, not much work getting done. Then by mid morning everyone knew we were the wealthiest club in the world.
I remember getting in touch with someone I knew who was around the fringes at City at the time - a Blackburn fan. I was expressing concern about rumours of a firesale and so on. This was about a week after the home friendly, when there'd been all the rumours on the day of various players leaving (I remember Ireland and Corluka in particular) and of our having mortgaged the next couple of years' Sky money). My acquaintance said, "Oh, I wouldn't worry. You're getting saved by some investors from the Middle East." (He also said it was a property deal, which is why I was intrigued by the Las Vegas thread for so long).
I think it became obvious that money was going to come in from somewhere when we didn't have to take desperate measures to pay the latest instalments on the Sven signings that summer. Indeed, we started spending a bit of cash as well - SWP, Kompany and Zabaleta were all signed in the week before, weren't they? I saw the initial story in Arabian Business by Anil Bhoyrul at about 8 a.m. that morning, when I came into my office in St Petersburg, Russia (so the time was three hours ahead of Manchester and the message boards were all pretty quiet). It was no surprise that there was a takeover, especially with Thaksin having also become persona non grata in the UK, but the scale of it was jaw dropping.
United had spent all summer chasing Berbatov and the Bhoyrul story had us making a bid of GBP 30 million, which was just sensational. The time shown on this story is eleven in the morning UAE time, but there were earlier versions of the story, too: http://www.arabianbusiness.com/abu-dhabi-seals-deal-buy-manchester-city-44156.html
I remember following it all online later on when I got home from work as deadline day hotted up. Ferguson having to kidnap Berbatov and overpay by five million quid was hilarious, while us landing Robinho was a huge statement. Fantastic day. Think it must be the best non-matchday I remember as a Blue.