The 23-year-old attacking midfielder has become BVB's fourth signing of the summer, moving for a reported €20 million to Peter Bosz's side
Borussia Dortmund have signed Germany Under-21 international midfielder Maximilian Philipp from Freiburg for a reported €20 million fee.
Dortmund announced the 23-year-old's signing on Wednesday, with Philipp having agreed a five-year contract for Peter Bosz's side.
He played 25 times for seventh-placed Freiburg in last season's Bundesliga, scoring nine goals including one in a 3-1 away defeat to Dortmund in September.
"BVB are one of the biggest clubs in the world. It is an honour for me to be able to play here," Philipp told the club's website.