Eintracht Frankfurt Tuesday turned to former Croatia coach Niko Kovac to lead the club out of relegation danger.
Kovac replaces Armin Veh, who was dismissed on Sunday after a run of seven games without a win.
Kovac, 44, has signed a contract with Frankfurt until the end of June 2017, but the new deal only applies to the first division.
His brother Robert will assistant coach, a job he also fulfilled with Croatia.
"I have come here to keep the team up. I am not thinking of anything else," Kovac told a news conference.
Frankfurt have slumped to third-last in the Bundesliga, the league's relegation/promotion play-off spot. On Saturday they travel to sixth-placed Borussia Moenchengladbach.
Eintracht chief executive Heribert Bruchhagen said: "It will have to be Niko Kovac's goal to stir the team into action, to release energy in order to avoid relegation. We are convinced that he will achieve that."
Berlin-born Kovac led Croatia to the 2014 World Cup finals in Brazil but was dismissed in September after poor results during Euro 2016 qualifiers.
A former Croatia international, midfielder Kovac played 241 Bundesliga matches for Hertha Berlin, Bayer Leverkusen, SV Hamburg and Bayern Munich, winning the league and cup double with Bayern in 2003.
He ended his playing career at Red Bull Salzburg, later beconming an assistant coach at the Austrian side.