Bayern Munich president Herbert Hainer has admitted that the Bavarian giants cannot keep Joshua Kimmich and Leon Goretzka "at any cost".
Goretzka only has 11 months left to run on his current contract, and Manchester United are strongly interested in acquiring his services.
Kimmich is also involved in negotiations on his agreement, which expires in two years time.
"They will certainly not be kept at any cost," Hainer told Kicker.
"The players know what they have at Bayern, they are paid very well here too, everyone gets their salary.
"And they can win titles with us now, and also in the future."