Thomas Tuchel will leave Borussia Dortmund after two years in charge, with the club thanking him for his work as they confirmed his departure.
On Tuesday, Tuchel announced the news on Twitter, using an account set up just over an hour before his departure.
"I am thankful for two nice, eventful and exciting years. It's a shame it won't go on," the 43-year-old wrote.
"Thanks to all the fans, the squad, the staff and to everyone who supported us. I wish BVB all the best."
In a statement, Dortmund said: "Eight-time German champions Borussia Dortmund and coach Thomas Tuchel are parting company with immediate effect.
"This is the result of a conversation between CEO Hans-Joachim Watzke, sporting director Michael Zorc, Thomas Tuchel and his advisor Olaf Meinking, which took place on Tuesday.
"We would like to thank Thomas Tuchel and his coaching staff for the sporting success they have brought to BVB with the win over Eintracht Frankfurt in the DFB Pokal final in Berlin.
"We wish Thomas Tuchel nothing but the best for his future professional endeavours."
The statement said the departure of Tuchel was "the result of a longer process" and had been "supported by all the club committees."
It added: "The well-being of the club, which is much more than just sporting success, will always be more important [than individual people]."
Tuchel joined Dortmund ahead of the 2015-16 season, and in his first year guided them to the highest points tally ever achieved by the runners-up in the Bundesliga.
On Saturday, he led BVB to their first trophy in five years when they beat Eintracht Frankfurt 2-1 in the DFB Pokal final.
But on-field success was overshadowed by a rift between Tuchel and the Dortmund leadership dating back to the 2015-16 season and the summer transfer window that followed.
A row between Tuchel and Watzke, as well as parts of the squad and the club's fans, dominated headlines this month, and talks between the two lasted only 21 minutes, the German paper Bild reported.
According to the paper, the talks took place at the Hotel L'Arrivee in Dortmund's south, close to where the BVB team bus was attacked prior to a Champions League match on April 11.
Local outlet Der Westen said Tuchel is set to receive €2 million in compensation, with his contract due to run until 2019.
Although Meinking told ESPN FC last week that there was nothing to rumours linking his client with Bayer Leverkusen, they are reported to be the front-runners for his signature.
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