Hitler did have his eye on Poland. wanted to reclaim Polish corridor + city of Danzig was confident that the Polish forces could be defeated

Despite their threat to go to war Hitler though that it was unlikely for Britain and France to risk war over Poland

However he was worried that Stalin would oppose Germany’s invasion of Poland since Poland bordered the USSR.

if USSR opposed Germany’s invasion there was a possibility that Britain and France would act. Germany would thus risk facing a 2 front war where it would have to fight Britain and France on the western front and the USSR on the eastern front. would be disadvantageous for Germany