Cleary Gottlieb Steen & Hamilton and Clifford Chance are advising banking giants BNP Paribas and HSBC Holdings, respectively, on the sale of combined assets worth a total of almost $3 billion.

Paris-based BNP announced Thursday the $2 billion sale of a 28.7 percent stake in publicly traded French real estate investment trust Klépierre to Simon Property Group, the largest owner and operator of shopping malls in the U.S. Klépierre owns roughly 275 shopping centers throughout Europe.