Question: What is the name of the retired German football defender and current manager of SV Darmstadt 98 who is assisted by Sascha Franz?

Context paragraphs:
2012–13 SV Darmstadt 98 season: The 2012–13 SV Darmstadt 98 season is the 116th season in the club's football history.  In 2012–13 the club played in the 3.  Liga, the third tier of German football.  It is the clubs second season in this league, having been promoted from the Regionalliga in 2011.

Horst Franz: Horst Franz (born 17 June 1940) is a German football manager.  His son Sascha Franz is also a football coach, currently as an assistant to Dirk Schuster at SV Darmstadt 98.

Markus Beierle: Markus Beierle (born 2 June 1972) is a retired German footballer.  Born in Brackenheim, he was a striker for the Southern Region team SV Darmstadt 98 and was one of the main catalysts in the subsequent rise of the Darmstadt team through the regional divisions.

2016–17 SV Darmstadt 98 season: The 2016–17 SV Darmstadt 98 season is the 119th season in the football club's history and 2nd consecutive and 4th overall season in the top flight of German football, the Bundesliga, having been promoted from the 2.  Bundesliga in 2015.  Darmstadt 98 will also participate in this season's edition of the domestic cup, the DFB-Pokal.  It is the 96th season for Darmstadt in the Jonathan-Heimes-Stadion am Böllenfalltor, located in Darmstadt, Germany.  The season covers a period from 1 July 2016 to 30 June 2017.

Uwe Beginski: Uwe Beginski (born 13 December 1959) is a retired German football player.  He spent three seasons in the Bundesliga with Hamburger SV and SV Darmstadt 98.

SV Darmstadt 98: SV Darmstadt 98 is a German football club based in Darmstadt, Hesse.  The club was founded on 22 May 1898 as "FC Olympia Darmstadt".  Early in 1919, the association was briefly known as "Rasen-Sportverein Olympia" before merging with "Darmstädter Sport Club 1905" on 11 November that year to become "Sportverein Darmstadt 98".  Merger partner "SC" was the product of a 1905 union between "Viktoria 1900 Darmstadt" and "Germania 1903 Darmstadt".  The footballers are today part of a sports club which also offers its approximately 5,500 members athletics, basketball, cheerleading, hiking, judo, and table tennis.

Roland Gerber: Roland Gerber (20 May 1953 – 24 February 2015) was a German football coach and a former player.  He spent seven seasons in the Bundesliga with 1.  FC Köln and SV Darmstadt 98.

Aytaç Sulu: Aytaç Sulu (born 11 December 1985 in Heidelberg, Germany) is a Turkish football defender currently playing for SV Darmstadt 98 as captain in the Bundesliga.

Dirk Schuster: Dirk Schuster (born 29 December 1967) is a retired German football defender and current manager, having last coached FC Augsburg.

Michael Harforth: Michael Harforth (born 9 February 1959) is a retired German footballer who played with Karlsruher SC, Freiburger FC, SV Wiesbaden, MSV Duisburg, Hannover 96, SG Egelsbach and SV Darmstadt 98.

Supporting paragraphs: Horst Franz Dirk Schuster
Answer: Dirk Schuster