This article seems to suggest that Saddam would leave Iraq if the USA gave him 1 billion dollars. No.

Saddam would leave Iraq if he were allowed to leave Iraq with 1 billion dollars that he already had. It would be Iraqi money he would be stealing.

Albeit, since it was probably oil money, most of it came from the USA, but when you buy something, the money you used to buy it is generally no longer considered yours.