i would imagine that after the process is finished, he would need an exit visa and would not be able to work for 2 years without a no objection letter.

the more pressing issue is what is your friend doing? if he is worried or has a bad feeling about this then he should tell the company he is not interested and is going home. if a company tries to screw you before you're even an employee they will most certainly screw you after you are an employee.

buyer beware.

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"Even a stopped clock gives the right time twice a day." Withnail & I