Manchester United have appointed Ralf Rangnick to become their interim manager after the dismissal of Ole Gunnar Solskjaer.
The 63-year-old German's appointment will last until the end of the season, when he will then continue in a consultancy role for a further two years.
United say they want a temporary manager to take charge before appointing a permanent boss at the end of the season.
Who is the German manager?
Rangnick, who began his coaching career when he was just 25, is described as one of the most innovative football brains in Europe.
Liverpool boss Jürgen Klopp previously called him the best German coach still in the game, and has said his arrival at United would not be good news for other Premier League teams.
What success has he had?
Rangnick is regarded as the creator of the prototype for Klopp’s counter-pressing football and has built up Bundesliga clubs Hoffenheim and RB Leipzig following cash injections.
He also took lower league side Ulm into Germany's top flight for the first time in their history.
The man dubbed 'the professor' by those mocking his appearance is more of a guru to German football.
He has had spells working as an interim manager over the last decade and before Manchester United, he was as director of football at Lokomotiv Moscow.
Following former protégées like Klopp and Chelsea's Thomas Tuchel to England may have been inevitable.
Manchester United will be hoping his short return to managing will be enough to help them turn the season around.