Swap Button and Heidfeld soon?

I just read in Sport1.de that Button and Heidfeld might soon be able to exchange the cockpits. I guess there’s something about it, because Werner Heinz (manager of Heidfeld) also confirmed these speculations with the words “now everything can go very quickly”. Boa, is already crazy or what do you mean? Maybe even better for Heidi, because Williams is not as financially strong as Honda, writes sport1.de