The Sun-Times report says they have exhausted all talks with Buerhle as far as any kind of extension goes so they may have no choice but to deal him. Also, the favorites leading into the weekend were the Mets and Braves. Now, the paper reports the Boston Red Sox are the favorites because they a) have many prospects, b) are willing to give Buerhle a long contract extension and c) want to keep the Yanks out of any deal for Buerhle.
But the paper also says any deal won't be done anytime soon as the White Sox GM will wait it out as long as he can to get the best possible deal.