Possible buyers for the state-rescued German bank are financial investors and non-European banks, Der Spiegel said.
Reuters reported in May that HRE had appointed Citi to organise the sale, which it must complete by the end of 2014 as a condition for the European Commission's approval of its bailout.
HRE plans to start the sale of Deutsche Pfandbriefbank in 2014, Der Spiegel reported.