Muslims working in non-Muslim countries must first prefer to send this money to their countries. For what is proper for one is to think of his/her country first.

However, they need to receive the money, which is given as interest by the bank; they should not leave the money there. In a hadith passes in the books of the Islamic Canonical Law, the Prophet (PBUH) clearly states that Muslims in non-Muslim countries may receive interest. Muslims need to receive both the capital and the interest given as a result of this money. Their gaining strength with the money they receive from Muslims means Muslims weakening. Islamic conscious must not allow something like this to happen.
Here is a known truth that a Muslim cannot receive interest from another Muslim even in a non-Muslim country.