The club has seen Henrikh Mkhitaryan, Mats Hummels and Ilkay Gundogan all depart this summer.
Liverpool manager Juergen Klopp
Dortmund have seen several stars already move on for new clubs this summer in a disappointing transfer window.
Germany's Ilkay Gundogan
Mats Hummels has moved to Bayern Munich, Ilkay Gundogan has gone to Manchester City and Henrikh Mkhitaryan is heading to Manchester United.
There have also been rumours about their other stars, with Pierre Emerick Aubameyang heavily linked to other clubs for several months.
The club has already moved to offset the exits by signing hot prospects such as Raphael Guerreiro and Ousmane Dembele and Klopp has insisted because of that he is not concerned about his former club.
"Dortmund have managed to sign almost all of Europe's biggest talents this transfer period," Klopp told Bild.
"I am not worried about Borussia Dortmund at all. If there's one club that can cope with the departure of three key players, it's got to be Borussia Dortmund and coach Thomas Tuchel."
It now remains to be seen whether Borussia Dortmund can cope with losing several of their star men this summer.
Given the quality of the players that have departed, it is currently difficult to see how they will manage to be as competitive as they have been.
However, it also provides Thomas Tuchel with the perfect opportunity to build his own side as Klopp did before him, and he will surely take the opportunity to do so.
Bayern Munich v Borussia Dortmund - German Cup DFB Pokal Final