Relegation-threatened TSG 1899 Hoffenheim have appointed Julian Nagelsmann as their new head coach.

The 28-year-old, now the youngest head coach in Bundesliga history, was due to take charge of the Sinsheim club on a three-year deal as of the summer, but has been parachuted in ahead of schedule after Dutch veteran Huub Stevens stepped down from the role due to health reasons on Wednesday.

Read: Stevens resigns as Hoffenheim coach

"It's a massive challenge, made worse by the position in the table," Nagelsmann said as he prepared to oversee first-team training for the first time, despite still studying for his senior coaching license. "I'm looking forward to working with the team and giving them fresh impetus my way."

The former Hoffenheim Under-19s coach, whose playing career was cut short by injury at the age of 20, will make his Bundesliga debut away to SV Werder Bremen this weekend, with Die Kraichgauer occupying 17th place in the standings after 20 matches.

Preview: Bremen vs Hoffenheim