The White Sox signed lefty Alan Embree to a minor league deal and assigned him to Triple A Charlotte, tweets MLB.com's Scott Merkin. Embree was designated for assignment by the Red Sox earlier this month, and elected free agency after he cleared waivers. Embree has been in the White Sox organization before, tossing 34 innings for them in '01 back when Kenny Williams was basically a rookie GM.
Embree, 40, tossed 7.3 innings for Boston's Triple A club this year. In 2009, he posted a 5.84 ERA in 24.6 innings for the Rockies before a July line drive from Martin Prado fractured his tibia. Chicago's pen currently has Matt Thornton and Randy Williams coming from the left side. It's only a seven-inning sample, but Williams has struggled against left-handed hitters this year.