I would think that Stalin would propose (and Heinz might accept) that the USSR and Germany divide Poland on the 1914 borders. That would go a ways toward placading German conservatives as it means the Germans get back the territory they lost in the treaty of Versailles... particularly the Danzig corridor.
Only downside for Germany is how much it will piss off the Anglo-French. But then making peace so easily with Stalin is going to do that anyways.
Only downside for Germany is how much it will piss off the Anglo-French. But then making peace so easily with Stalin is going to do that anyways.