Citigroup Inc (C.N) will combine its retail banking and mortgage operations under Jonathan Larsen, according to an internal memo seen by Reuters, in the second senior promotion for a veteran of the bank’s Asian franchise this year. The U.S. bank’s Asia Pacific chief Stephen Bird in April became the global head of Citi’s consumer bank, in a move seen by analysts as rewarding the U.S. lender’s strategy in the region. Larsen, currently global head of retail banking, previously ran Citi’s Singapore unit and spearheaded the lender’s push in credit cards in Asia.