Borussia Dortmund chief executive Hans-Joachim Watzke has admitted relations between his club and Bayern Munich are far from cordial as the Bundesliga rivals prepare to meet today in a rehearsal for the Champions League final.
With Bayern having already won the league and Dortmund second in the table, the match at Borussia's Signal Iduna Park stadium is no more than a warm-up for the Wembley final on May 25.
But relations between Germany's top two clubs are strained despite the promise of a first European Cup showpiece involving two German teams.
"I have always spoken with a lot of respect and admiration for Bayern. But that has cooled. There are a few irritations now," said Watzke after Borussia beat Real Madrid 4-3 on aggregate in their Champions League semi-final to reach the final.
After news broke last Tuesday that Germany star Mario Goetze, 20, has invoked a release clause in his Borussia contract to join Bayern in July for a reported €37 million (HK$377 million), there is little love lost between Dortmund and the Bavarians.
Watzke insisted there was no animosity between the clubs, however, the Bayern delegation have not been invited as usual to dine with their Dortmund counterparts, and will be greeted "with a handshake".
Certainly, Bayern have shown Dortmund little courtesy recently, especially since their 3-0 win at Barcelona on Wednesday gave them a 7-0 victory on aggregate in the other Champions League semi-final.
"We've got an easy away game on Saturday, so let rip. We're already German champions," Bayern chairman Karl-Heinz Rummenigge told the team after the win in Barcelona as they prepare to face last season's domestic double winners.
Likewise, Bayern president Uli Hoeness stirred things up in February after Dortmund's 1-0 defeat in the German Cup quarter-final at Munich's Allianz Arena when he said: "The status quo in German football has clearly been restored".
But Dortmund coach Juergen Klopp said his side were looking forward to today's match.
"This won't be a character test, it's just a game we really, really want to play because we want to put on a great evening for our fans," said Klopp, 45. "The boys will run like hares."
Dortmund will be without Goetze, who tore his left hamstring against Real on Tuesday, while Germany midfielder Sven Bender is out with damaged ankle ligaments.
Meanwhile, Bayern coach Jupp Heynckes said he would not be fielding his top side in Dortmund.
Dortmund have won all of their last six league games, and are one short of their own Bundesliga record, set in 2005, for the most consecutive league wins.
But their current sequence is bettered by Bayern, who have won 14 matches on the spin.