Bayern Munich coach Jupp Heynckes has hit back at Borussia Dortmund counterpart Jurgen Klopp, who said "money rules the world" after his side lost 1-0 to the Bundesliga leaders in the DFB-Pokal.
Speaking at a press conference on Thursday, Klopp said he was not surprised by Bayern's Bundesliga supremacy.
"Right now, it is a bit like what the Chinese do in economics or industry," he explained. "Watch the others and plagiarise what they do. Take the same path, only with more money and other players. And, for the moment, you will be better again."
But an angry Heynckes said Bayern "have existed for longer than Klopp has been a coach and have always had a unique style of playing", adding that "it is important to show some dignity, be it after victory or defeat - but even more when you lose".
He said he had faced coaches including Ernst Happel, Marcelo Lippi and Arrigo Sacchi and had beaten them all, adding: "Never would I have considered accusing the others of plagiarism after being defeated.
"If Jurgen has the pleasure of coaching Bayern or Real Madrid, he will realise what it means - that this is a completely different world."
Wolfsburg general manager Klaus Allofs also waded in to criticise Klopp's remarks, saying: "It has always been like this - the successful lead the way. That's a normal thing." Dortmund, back-to-back title holders in Germany, are second in the Bundesliga table but trail the Bavarians by 17 points.
In the summer, Bayern spent around €70 million on new players including Croatia international Mario Mandzukic, Switzerland starlet Xherdan Shaqiri, Borussia Monchengladbach defender Dante and Spain international Javi Martinez.
"Bayern have worked hard for it," Klopp said. "They have an exceptional lead, but it's like that in a lot of European leagues.
"Right now, it is a bit like money rules the world, but we will continue to try to be an uncomfortable team to play."
Dortmund chief executive Hans-Joachim Watzke later came to the defence of his coach, insisting that what he had said was fair and that Bayern were not in any place to criticise him.
"[Bayern] are certainly not the club to tell us to show greatness in defeat. They do not have the monopoly in that area," he told Sport 1.
"What Jurgen Klopp says is totally correct in form. We certainly don't need Bayern to instruct us how to behave."