After finishing third in the Bundesliga last season, the pressure is on Dortmund to challenge next term but the CEO is realistic about their chances
Bayern Munich's signing of James Rodriguez is another example of the gulf in class between them and Borussia Dortmund, Hans-Joachim Watzke says.
The Bavarian side won a fifth consecutive Bundesliga title last season, finishing 18 points ahead of third-placed Dortmund.
Carlo Ancelotti's side have further strengthened the squad in the close-season with the signings of James, Corentin Tolisso, Niklas Sule and Sebastian Rudy as they look to maintain their domestic dominance while challenging in the Champions League.