Thinking about this... Kaka is with Robinho with the national squad, yes? They are very close friends and speak on a regular basis, yes? I think part of the Robinho deal was that Kaka was coming, he was told this and agreed to move. As we know the deal went tits up and Robinho did a runner... Coincidence? Maybe. Then after a chat and being told everything was ok he came back, yes? Maybe he was told Kaka was still coming? Maybe his still is? We know for sure that to much was done in Jan to just walk away, we had a plan and I doubt we will just let Real/Milan/Chelski scupper that plan.
Will we sign Kaka? I dont know but I do know Robinho was not happy at Real, who is Kaka going to ask for advice on Real? Yep Robinho and will he give the club praise? I highly doubt it seen as he couldnt get away quick enough, so... This makes me think that Robinho will be doing his best to "tap" up Kaka and be trying to persuade him NOT to join Real Madrid but instead join him at City!