According to Jon Heyman of CBS Sports, the White Sox asked for two of the Yankees top three prospects in Montero, Banuelos, and also Dellin Betances. He adds that the Yankees may be willing to include one of those three in a deal, but not two.
Danks is expected to be a free agent after the 2012 season so it seems unlikely that they would even include one of those three in a deal. That’s based on Cashman’s preference to avoid “paying twice” for players as in paying out in prospects in a trade and then paying again to re-sign that player right after.
So unless the White Sox are willing to lower their demands and center a deal around other prospects a deal doesn’t look very promising a deal will be made. There is a possibility that the Yankees are holding out for Darvish and could be more aggressive going after Danks if they miss out on him. However, the Yankees are playing it cool with Darvish so far.