Bayern Munich chairman Herbert Hainer has taken aim at Barcelona.
Barca are interested in Bayern midfielder Joshua Kimmich.
But Bayern have been left unimpressed by their attempts for the Germany international.
"I don't understand why they flirt openly and offensively with the player. Kimmich is an absolute cornerstone for us and it is unthinkable that he can leave," said Hainer.
Hainer added: "Kimmich is firmly committed to our present and future plans with absolute certainty."