Actually when you think of it, it would be a very smart move from Juve. The risk is considerably reduced by the fact that it would be a loan and not a transfer, so there won't be any fee involved. Plus, i am sure he would link up well with Diego, Brazilians love it when they have someone they can play their cute little one twos with. Also, Robinho at his best is a brilliant player. I think Juve should go after him.
If there was any chance that City would loan him to Arsenal, i'd want Wenger to go for him too.