A man walks past of a logo of China Construction Bank outside its headquarters building in Beijing August 11, 2011. Bank of America Corp has held exploratory talks with the principal investment funds of Kuwait and Qatar about selling part of its $17 billion stake in China Construction Bank, three sources with direct knowledge of the talks told Reuters. To match EXCLUSIVE BANKOFAMERICA/CHINA REUTERS/Jason Lee (CHINA - Tags: BUSINESS CONSTRUCTION SOCIETY)