Arnesen stands in as Hamburg boss
Hamburg sporting director Frank Arnesen will take over as coach until the club appoint a permanent successor to Michael Oenning.
Rodolfo Cardoso took over in the HSV dugout following the sacking of Oenning last month, but under league rules he was not permitted to work for more than a fortnight since he does not hold a suitable coaching licence.
"Hamburg sporting director Frank Arnesen will temporarily take over the duties of the head coach at HSV and responsibility of training the team," read a club statement. "Arnesen will function in the dual role until a suitable candidate is found for the coaching job."