His contract at Juve runs out in 12 months. I'd offer him a 2 year contract and pay Juve what they want.
I am not seeing a downside. City have the perfect game for Ronaldo. Crosses raining in from either flank. And if defenders have to mark Ronaldo then it frees everything up for Sterling and our wide forwards. Ronaldo is not quick any more but he has good technique and good in the air. He is simply better than what we have. Just do the deal City. Why wouldn't you? Not seeing why some people think this is complicated.