Borussia Dortmund director of sport Hans-Joachim Watzke has dismissed suggestions Bayern Munich are more concerned with winning the Champions League than the Bundesliga.
Bayern president Uli Hoeness this week claimed he would rather win European football's top prize - the Bavarians face Real Madrid in the semi-finals - than regain the title from Dortmund.
"I don't think anybody seriously thinks that Bayern don't want to win the league," Watzke said. "(Bayern coach) Jupp Heynckes and his players want to win the league, I can guarantee it.
"Bayern will try to win all three titles (the two sides will meet in the DFB-Pokal final in May), but Borussia Dortmund want two of them."
The two sides meet in the league in a potential title decider next Wednesday and Dortmund will look to ensure they go into that game with their three-point lead at the top of the table intact.
Dortmund travel to Wolfsburg on Saturday, while Bayern take on Augsburg in a Bavarian derby.
Bayern's superior goal difference means, should they at least match Dortmund's result, they will be able to regain top spot at the Westfalenstadion with four games of the season to follow.
On the other hand, Dortmund could establish an almost unassailable lead at the top of the table over the next seven days with three wins out of three.
With Schalke and Borussia Monchengladbach almost mathematically certain that they will secure Germany's other two Champions League berths, the race is on behind them for three places in the Europa League.
Five clubs are currently separated by just a point, with Hannover holding a slender advantage over Stuttgart, Bayer Leverkusen, Werder Bremen and Wolfsburg.
In-form Stuttgart are at home to Mainz, while Bremen head to relegation-threatened Cologne and Leverkusen travel to Hamburg, who are also struggling at the wrong end of the Bundesliga.
Hannover face Schalke in the battle of Germany's remaining Europa League participants in the current campaign.
Elsewhere, Gladbach entertain Hertha Berlin, Freiburg host Nurnberg and Kaiserslautern welcome Hoffenheim to the Betzenberg.