I’d prefer to see them stay in Germany but squeeze some money out of the Germans for it. There are still a lot of advantages to staying in Germany if we are going to have a major military presence in Europe. The infrastructure is already there, and Germany is the transportation hub of Europe and dominates the northern European plain.
Maybe he is setting prices so it becomes cheaper for them to raise their own Army to the task, rather than renting American mercenaries for a relative song.