So if I have this right…
No more goals- England v Portugal
If France score- England v Hungary
If Germany score- England v Germany
If Portugal score- England v France
There’s no rule, but I personally think the manager should be from the country he’s managing.
Its a terrible & embarrassing state of affairs when a country like England can’t find an English manager
But we don’t have a single English manager with a record anywhere near that. There are no options.
Can you not see that you are asking and expecting the utterly impossible?