9:21am: The White Sox are in serious talks for a deal that would send starter Edwin Jackson and third baseman Mark Teahen to the Blue Jays for reliever Jason Frasor and a prospect, tweets Ken Rosenthal of FOX Sports.  Rosenthal's colleague Jon Paul Morosi says this deal is close and money could be involved.  The rumor was first reported ten hours ago on Twitter by a fellow named Doug Seyller.

The Jays' motivation for renting Jackson for two months and taking on a bad contract in Teahen is unclear.  There doesn't appear to be a draft pick angle, as both Jackson and Frasor project as Type Bs.  Perhaps Blue Jays GM Alex Anthopoulos is considering flipping Jackson to a contender.

The White Sox were known to be seeking bullpen help, and Frasor has a club option for next year.  The Sox could also subtract a reliever, as Joel Sherman of the New York Post reports that they're talking to the Cardinals about Matt Thornton.  Maybe Kenny Williams' goal in the Jackson trade is to shed the $9.7MM left on the contracts of the two veterans, though we need to see the quality of the prospect involved.  Sox pitchers John Danks and Gavin Floyd are also on the market, according to Rosenthal.  The White Sox are currently 4.5 games out in the AL Central with another game against the Tigers tonight.