Jon Heyman, a man who's made his career reporting on these sorts of things, recently tweeted the following:
#chisox get youlikis according to sources
— Jon Heyman (@JonHeymanCBS) June 24, 2012
The word on the return package is still being formed, but for now, this is the best report.
White Sox have acquired Kevin Youkilis for Zach Stewart and utility player.
— David Kaplan (@thekapman) June 24, 2012
Seeing as both Stewart and all White Sox utility players are of negligible quality, it's hard to really quibble with them as a return for Youkilis, who's been bad (.233/.315/.377), but still worlds better that what the Sox have been getting from 3rd base.
UPDATE: The utility player is Brent Lillibridge, which doesn't change anything that I said.
More to come.