The Milwaukee Brewers are still hoping they can sign Zack Greinke to an extension. Feels like that should go atop every Greinke trade rumor. There are still two weeks before the non-waiver trade deadline. The Brewers will be actively engaging Greinke's agent, and they'll probably be competitive.

Buuuuuut, they have to prepare for the possibility that Greinke is determined to try this wacky free-agency idea out. And if that's the case, they might as well get some prospects for their ace. According to Jon Heyman, the White Sox are considering a move for the right-hander:

The surprising White Sox now have Zack Greinke on their radar, scoures said.

The first-place White Sox have established themselves as the favorite in the A.L. Central to the surprise of many, and they are said to be hoping to make another second big splash on the trade market. Their trade for third baseman Kevin Youkilis has been a major hit.

The Braves, Angels, Rangers, Orioles and other also are expected to be in the Greinke derby.

The White Sox also have the worst farm system in baseball according to John Sickels, Baseball America, Baseball Prospectus, and FanGraphs, but other than that, I'm sure they're loaded with chips to trade to the Brewers. I'm sure Kenny Williams can do something ... and I'm just dying to see what it is.