He came on business company visa, right? which is usually 1-3months, and now he is in the process of switching to residence visa with the same sponsor. Medical and finger print....done.

Ok then, if he found a job in another company which is willing to sponsor him, he doesn't need to go back to his own country, he just need an NOC/Release letter from his current sponsor(Sponsor-1), and change his visa into residence permit under the sponsorship of the new company(Sponsor-2).

So long his Residence visa from Sponsor-1 is NOT stamped in his passport, he can transfer his sponsorship to Sponsor-2. But if its already stamped...then, he need to wait for 1 yr within the same sponsor.

Am just not sure if there's any changes recently with this procedures? Otherwise, this is the usual case.