Bayern Munich have become embroiled in a row with city rivals 1860 Munich over their tenancy of the Allianz Arena.
The second division side are looking into the possibility of moving their home games away from the stadium they share with their more high-profile neighbours.
Bayern have already bailed out 1860 once by buying their joint share in the stadium venture last year and chairman Karl-Heinz Rummenigge is unhappy that they are now considering moving away.
"I have got to say, quite honestly and openly, that it is like in any rental agreement. If the tenant wants to move out of the flat, or in this case the stadium, then there are damages to pay," said Rummenigge.
"If 1860 Munich think they can simply move out without any consequences, then they are very naive.
"We have already accommodated them in a big way and our willingness to talk is exhausted.
"We learned about all this from the newspaper, which is also typical 1860 style. We are used to it."