This isn't ITK, this is purely based on my wild imagination ;) but here is why Ronaldo will sign for us.
1. Fergie has retired, so now is the perfect timing/excuse as to why he could join us as he doesn't have to upset his former 'father figure' manager which was a problem in the past.
2. His recent comments over the last year have changed somewhat. To come out and suggest that he would find it very, very, very, very, very difficult (not impossible) to play for City due to his Utd past. If he would never sign for us he would come out and say so but he keeps leaving the door open whilst being very careful not to upset the rags. You don't really hear Ronaldo badmouthing us like other rags do.
3. I made a point of watching his body language when we played them in the CL at home and I thought it was interesting. He seemed to love playing the pantomime villain. There were a few cheeky smiles when he was getting booed, compare that to the way Rooney, Roy Keane, Neville, Ferdinand and even Ronaldo himself have all acted to us in the past. He did nothing controversial in that game that would piss us off apart from showcase his world class talent of course.
4. His not celebrating when scoring in both legs v Utd was totally acted out, he'd probably been practising his moves in front of his mirror all week. Everything he does is with his reputation and his CR7 brand in mind.
5. Nike are desperate to get him out of the Real Madrid kit. He's by far their most marketable player and they need him to be wearing Nike gear. However I'd think they would be interested in dealing with either Utd or us on this. Also don't forget that the Premier League is the most popular and marketable league in the world and they would much prefer to have him in England then over at PSG in France. Whatever makes them the most money.
6. Ronaldo has worked with Pellegrini in the past and by all accounts they got on well. If he believes Pellegrini is a good manager who will give him freedom on the pitch then it ticks another box. Does he have any idea or any confidence in Moyes as a manager? Does he want to risk his reputation at a club who will be going through a major transition. Huge risk.
7. As I said, Ronaldo is all about building his brand, if he went back to Utd sure he would be extremely marketable but I think City as a brand would explode (we're already the fastest growing club in terms of commercial revenue) if he joined and he knows it would be because of him. Add to that the fact that we talked about setting up soccer schools in his name around the world too. I think the Sheik would look at ways of making Ronaldo rich that wouldn't stop with his weekly pay packet.
8. If rumours are true we're starting to build a pretty good relationship with Real Madrid. Ronaldo is certainly a cash cow for them but they might feel his time there is up if they get adequate replacements. Bale and Aguero would suit them I think. And if Real Madrid were going to sell Ronaldo, would they seriously contemplate selling him to their closest rivals for worldwide brand dominance? Sell him to Utd and the rags commercially fly past Real Madrid. Selling him to us wouldn't have the same effect just yet.
9. I might be imagining this but didn't Ronaldo suggest he would like to play in USA one day? Do something similar to Beckham? Well, who has just bought a MLS club in the biggest city financially in America? He could join us in his prime before finishing off at New York.
It's all about the money and to me this all makes too much sense for Ronaldo and City to not happen.