ok yes agreed, that is if he has a non b from an embassy and not the immigration, forgot to ask if it was an extension.. i have had a few people say it is a visa so got confused
When you sell your company to a new director you will need to have quit work officially, return your work permit to the labour department, with that ur visa will get canceled automatically, in case you dont want to have problems later you will need to give the quitting paperwork to the immigration, where you will get a specific amount of days to leave the country ( i can't remember how many)
dont just let it run out, they get cranky if in the system you are under something else, you might have issues to do things later. I was warned by the CW when i was moving from one non b to another and that was the one thing they said to make sure was done for all visas
Regarding work permit, talking from expeiance, add a new work place and then remove the original company out of your work permit. Can you use that work permit later yes you can. Because it states the new place of work. I did that last year.
The only thing when they add the new company they do not add the address of the work place or what you work as, if you need tour work permit to state your position then you need to apply for a new permit.
Based on that, if you have the second company in the old work permit you can extend your visa, the visa section can be cranky about it, they prefer if the work permit is new.