Buehrle having a great year, I did not expect it coming off his very good 2011 FA year (his 2011 WHIP @ 1.3 was a bit higher than what he's doing this year at 1.16, that equates to an extra baserunner per inning every 7.1 innings if my math is correct (which it probably isn't)
Buehrle back on the staff would make losing Peavy next year less significant, but a Sale, Peavy, Buehrle, Danks, Humber/Quintana rotation would be nice if all healthy. to get buehrle, I would imagine we would be giving up Quintana and probably more if we wanted them to take on some of Mark's salary (if this is indeed a full-fledged firesale, they probably aren't going to be getting much back for their high-priced players like Mark, as they won't be eating any salary)