Allowing a dying man to go home to die is an honorable act to us. To them it will only be seen as a sign of weakness. The name of their religion, Islam, means submission. It is not only about submission to Allah, but to each other. Their whole culture is about subjugating women, infidels and other Mohammedans to their own will. They do not venerate a magnanimous victor the way we do. They don't even understand it.
This is all assuming that he is indeed as ill as they say he is or at all. That is something I wouldn't assume without knowing for a fact that his diagnosis was not dependent on the opinion of any Mohammedan doctor.