Mizuho Financial Group Inc. will pay several hundred billion yen for North American loan and derivative assets of Royal Bank of Scotland Group, a source with knowledge of the discussions said.

The loans are to highly rated companies, which means Mizuho will buy them for close to their face value, said the source, without giving further details.

Following the transaction, Mizuho may add employees from RBS to strengthen its debt capital markets business, the source said.