Clive Banks, co-head of the derivatives solutions group for corporates and financial institutions, has left Citigroup in London. Wiltrud Heiss, co-head with Banks based in Frankfurt, confirmed she will move to London as sole head of the group. She noted her move to London was arranged before Banks resigned, declining further comment. Banks is on gardening leave as first reported last Tuesday on DW's Web site and could not be reached. Jeremy Hughes, spokesman for Citi, confirmed the departure, declining further comment.