Eighteen months ago, Julian Nagelsmann was unveiled as Bayern Munich manager to the adulation of football hipsters and Bayern fans alike.
Here was a young tactician, with a cool haircut and trendy jackets, now taking over the biggest club in Germany.
On Thursday evening, Bayern let him go, opting to bring in the best manager on the market in Thomas Tuchel.
The Bavarians have long coveted the former Chelsea and PSG boss. With Nagelsmann plummeting out of favour and Tuchel jobless, Bayern made their move, quickly agreeing on a long-term deal with the German.
And it's the best move they could have possibly made.
This is less of a question of where Nagelsmann failed, than where Tuchel will succeed.
Nagelsmann is a terrific manager. He will prove his greatness. After all, he is still just 35. He was accomplished before he arrived in Munich, and leaves the club with a Bundesliga title to his name.
However, in Tuchel, Bayern now have their grown-up, their already-elite manager who can not only turn a domestic season around but could also deliver European glory.