Upon leaving for FC Bayern Munich, convincing the gifted player Oskar Rohr to follow him there.
With Rohr and Conny Heidkamp he formed a strong team in Munich and in 1932 won the German championship with Bayern in a final victory against Eintracht Frankfurt.
After the Nazis rise to power, the Jewish Kohn left Germany initially for Switzerland, but he soon got another engagement with FC Barcelona.
[8] His second stint there was not very successful and ended early in February 1934 when he was replaced with the player Ramón Zabalo.
He acted as a coach and physio, and was known for magical potions, which helped to cure injured players.