Thomas Tuchel says he needed to sign players like Andre Schurrle who have both rare intensity and unique talent.
Borussia Dortmund's general manager Hans-Joachim Watzke expects Mario Gotze to get back to his best following his return to the club.
Manchester United have confirmed Guillermo Varela has joined Frankfurt on a season-long loan.
The ESPN FC crew discuss Borussia Dortmund's transfer activity and whether they can challenge Bayern Munich in Germany.
After beating Man United 4-1, Borussia Dortmund manager Thomas Tuchel said his side can still improve on a lot of things.
ESPN FC's Paul Mariner and Alexis Nunes discuss the moves Borussia Dortmund have made in the summer transfer window.