If you intend to apply for going abroad directly, you can. However, if you want to do well after coming back from abroad, you may only find a position similar to that of an undergraduate. The salary will be 300,500 more. Unless you go to the top 10 business school in the United States, you may be able to apply for foreign investment banks directly.
Third, if you just want to reconcile or something. I think in your present situation, you should be able to work after graduating from college. However, now you basically have to have the experience of a teller to move up step by step. The training cycle of banks is too long. I've been watching tellers for four years.
In a word, my suggestion is that either you apply directly to the bank, or you can jump after a few years in the Big Four. Going abroad is not suitable for you for the time being.