TL;DR - You are entirely within your rights to ask. I wouldn't be hopeful of it going your way
From your previous question, I understand you are fresh out of college and have little experience in the workplace. This means that you are looking at an offer for an entry level position. Offers of this nature are particularly inflexible since there tends to be large numbers of people applying for each entry level position, compared to senior positions (the last senior vs entry position I advertised had eight times as many applicants for the entry level role).
The practical consequence of that is that the company offering the role have no incentive to go out of their way for you. I think you underestimate the complexity of having an employee in another country to where the company is based. I work for a relatively large organisation (500+ employees) and of those, precisely zero work in another country. We did try with a couple of employees who were adamant, and these are people who have worked for the organisation for over 5 years. Ultimately they had to resign their positions and now work as contractors, but this was not a trivial thing to arrange. And as a manager I have to be honest, I would not consider the level of difficulty and effort worth it for an entry level role.
How long do you propose working on site for? 3 months? 6 months? In both these cases you probably wouldn't be out of your probationary period, so why would I go to the effort? A year? Two years? Five years? How long does it take for you to become a "valuable employee"?
To give you an idea of the complexity, when this was asked of me I had to meet with: my boss, my corporate accountant, the head of finance, the head of HR and the head of legal several times to work out exactly how to legally achieve what I was asking. These are some of the busiest and highly paid people in the organisation (me excluded, I'm a middle manager) so this investment of time was significant. You'd be amazed how quickly the effective saving of half of your salary would be taken up in those meetings.
Ultimately you need to be honest about what you want. You will save yourself and the company a lot of stress and effort in the long run.