Borussia Dortmund have confirmed that they have completed the signing of Marius Wolf from Frankfurt for a reported fee of €5 million.
The 23-year-old winger has signed a five-year deal with the club that will see him tied to BVB until 2023.
In a statement, the player said: "My goal is to be successful with Dortmund in the coming years and, if possible, to win one or more titles.
"I'm very happy that I have the opportunity to develop myself further at such a big club."
Meanwhile, sporting director Michael Zorc commented: "Marius Wolf is a very capable player with a great deal of vision. The combination of his outstanding athletic ability and his outstanding mentality makes him a perfect player for Borussia Dortmund."
Wolf is coming off a successful season with Frankfurt, during which he played 34 times and scored six goals, adding a further 11 assists.
Moreover, he helped Eintracht win the DFB Pokal, thanks to a dramatic and somewhat controversial 3-1 victory over Bayern Munich earlier this month.
He will hope to play in the Champions League next season with his new club, who finished the Bundesliga season in fourth place, sneaking into the competition thanks to a superior goal difference than Bayern Leverkusen.