9:11pm: Gordon Edes at Yahoo has a pretty big update on the discussions. It appears the Red Sox have amped up their efforts to obtain the Doc, and they're willing to include Buchholz, one of Lars Anderson, Justin Masterson or Michael Bowden, and lesser prospects to fill out the rest of the offer.
Edes also reneges on his earlier report that Westmoreland had been part of a Red Sox proposal, and thinks that any reports about the Red Sox involving a third team to get a shortstop to Toronto are untrue.