This was probably the source of the idea that Simon might buy some of GGP's malls (not the whole thing). It was in the March 19th Kris Hudson story in the WSJ online.
“Simon also could use some of the proceeds to buy distressed malls, according to Jim Sullivan, an analyst with Green Street Advisors Inc.
"Several cash-strapped mall owners are attempting to sell malls to pay their debts. Chief among them is General Growth Properties Inc., which has warned it might file for Chapter 11 bankruptcy protection.”