I think the "subject matter to" is what's generally known as a 'weasel clause'. It is possible to basically place just about anything you need there...quite a bit of people will contain a little something like "subject matter to favorable financing" or "subject matter to enterprise husband or wife's approval" https://myfirstbookmark.com/story19907373/new-step-by-step-map-for-pork-meat-spain