The CEO of a top financial services firm is sounding the alarm over a “very ugly” real estate market in the next two years. Speaking to FOX Business host Maria Bartiromo at the World Economic Forum in Davos, Switzerland, Cantor Fitzgerald CEO Howard Lutnick said a “generational” shift was on the horizon, warning of a massive default in loan sales. REAL ESTATE INVESTOR WARNS US IS ENTERING THE ‘GREATEST’ CORRECTION OF HIS LIFETIME A foreclosure sign sits in front of a home on a hillside in San Clemente, California, on Aug. 25, 2010. “I think $700 billion could default… The lenders are going to have to do things with them. They’re…