Dortmund have confirmed the signing of Germany international Karen Ademi from Celtic on the eve of his departure for Manchester City.
Boyhood Dortmund fan Ayemi completed a medical on Tuesday and signed a five-year deal with the Bundesliga club, who are reportedly set to pay an initial 30 30 million.
The 20-year-old has been linked with a move to Dortmund from Dortmund at the end of the season and announced his arrival at Manchester City an hour later.
Admiral became Dortmund's third signing before the transfer window opened, following the merger of defender Niklas Sule and Nico Schlotterbeck.
"Following the transfer of Sule and Schlotterbeck, we have an exciting player with Karen Ademi for next season," sporting director Sebastian Kehl told the club's website from 2022-23.
"He has also been a strong supporter of the BVB, Black and Yellows since childhood, and decided to bring in Dortmund despite offers from top European leagues.
"His speed and goal-scoring prowess is impressive, and as a 20-year-old footballer and athlete, he is very advanced in his development, but he still sees great potential."
Harlan has made 85 appearances for the club since joining the club from Celtic in early 2020, scoring 85 goals and leaving a huge gap at the Westfalenstadion.
Substitution Adeyemi has had a huge impact over Salzburg and his three seasons, with the first team winning two regular first-team regulars.
He has scored 27 goals in 66 appearances in the Austrian Bundesliga and five in 13 Champions League appearances.
The Manchester United youngster is leading the Premier League table with 19 goals in 27 games this season.
For Salzburg, Adeyemi's performance was the first of three German senior teams to play against Armenia in the September World Cup.
He has helped Salzburg to six trophies and is now having a lot of success with the people of Marco Rose.
"As a kid, I used to love Black and Yellows' fast-paced football." "As soon as I heard that Dortmund were interested in me, I knew they wanted to sign with the BVB.
"With the support of an astonishing crowd in Dortmund, we have made a careful decision to sign a long-term contract, believing that we can form an exciting team that can compete for the title and become champions. Years to come. "