Gav33
Winger
What did they win?
Nee idea. You didn't say they had to win something - you said "worked". He made them better - which I take as "worked".
See if you can argue with this one then...
In Germany, On 3 November 2019, Niko Kovač left Bayern Munich by mutual consent after a 5–1 loss to Eintracht Frankfurt, his assistant Hansi Flick, promoted as interim coach. In his first match in charge, Bayern defeated Olympiakos 2–0 in the UEFA Champions League group stage on 6 November 2019. In April 2020, Bayern Munich appointed Flick as permanent coach with a contract until 2023. Flick successfully guided Bayern to win the Bundesliga, DFB-Pokal and UEFA Champions League, thus completing the continental treble for the second time in the club's history, the following season, he led Bayern to win the 2020 UEFA Super Cup against Sevilla.[10] He also led Bayern to win its first ever sextuple after winning Club World Cup in February 2021 by defeating Mexican team Tigres.[11]