Markus Schreiber/Associated Press
Klopp up for the Pep challenge
Top striker Robert Lewandowski has jumped ship to join Bayern Munich on a free transfer.
This is not particularly good news for those desiring a tighter title race this season. The Bavarians finished 19 points ahead of Dortmund last season. You could consider that progress, however, the gap was 25 points the season before.
How crucial a player Lewandowski was at Dortmund can be judged by the attacking talent signed to ease the pain of the Pole's departure.
Forwards in the shape of Italian Ciro Immobile (€18.5 million), Colombian Adrian Ramos (€9 million) and South Korean Ji Dong-won have all been brought in by Jurgen Klopp in an attempt to plug the massive gap left by Lewandowski.
Dortmund must wait and see how this attacking trio bed in at the club during pre-season. Also, the return to fitness of Marco Reus will be key to Dortmund's fortunes this campaign.
If any unforeseen injuries occur in the run up to competitive action, Dortmund have the financial muscle to react and take another plunge in the transfer market.