I guess that you guys are all over this story already but I have copied it from MLB TR anyway!
Padres, Red Sox, Cubs Have Talked 3-Team Trade
By Jeff Todd [July 31, 2015 at 12:18pm CDT]
The Padres, Red Sox, and Cubs have discussed an unspecified three-team deal, Jon Morosi of FOX Sports tweets. ESPN.com’s Buster Olney tweeted earlier that there was industry speculation of discussions between the clubs, noting that there were many potential fits between them.
The parameters of a deal remain unreported at this time, but both Chicago (here and here) and Boston have been heavily connected to San Diego in recent days.