As per the above tweet, Kim states that he is required to stay in Australia until 2020/21 in line with the Australian PR residency rule.
Maybe I should've post this after ti8 qualifier. Because I have problem with Australia PR residency rule, I must stay in Australia until 2020~21. I won't be able to join any international team that boot camps oversea. sorry for fans who were waiting for me to return :(— QO (@QOdota) May 14, 2019