Deutsche Bank’s (DBKGn.DE) restructuring plan claimed its first management casualty when its retail chief Rainer Neske decided to quit after the group chose to split up and sell chunks of his domain, including Postbank (DPBGn.DE), German media reported. Neske, the computer scientist who has worked at Deutsche for 25 years, will leave after losing an internal strategic debate that will see his responsibilities shrink, newspaper Handelsblatt reported in its Tuesday edition.