Hamburg have appointed Bernd Hollerbach as their new coach on a deal until June 2019.
Hollerbach, who played almost 200 games for the club between 1996 and 2004, took training for the first time on Monday afternoon.
The 48-year-old, who replaces Markus Gisdol after he was sacked on Sunday, was a coach at Wolfsburg and Schalke under Felix Magath.
He then enjoyed success with Wurzburg Kickers, leading the club to 2. Bundesliga for the first time in 40 years. He left in 2017 following the club's relegation.
Hamburg are currently 17th in the Bundesliga after losing 2-0 to bottom club Cologne on Saturday.