You want to work in Japan, but your Japanese is not good enough to study. I imagine that you must intend to work as a language teacher, since you will not learn Japanese to a professional standard while taking an English-language MBA. I don't think an MBA will help you as much as learning Japanese though, whether you want to work as a language teacher or in a managerial role.

Take a look at Do you need to speak the local language? www.find-mba.com/board/34713

There's no MBA in Japan that's known in Europe, but the double MBA with Nanyang, the Temple and McGill MBA are at least known outside Japan.

So you think it is "useless" to do an MBA in Japan in English and recommend to continue learning the language if I want to work in Japan and for job opportunities in Europe I should do a Master degree in Europe, right?

Well, I think learning is always somewhat useful, but if you have the specific goal of working in Japan then learning the language has to be your priority. Perhaps you can take a part-time MBA and a Full-time Japanese course at the same time. However, I think the US part-time MBAs in Japan may not be very highly valued by Japanese firms, and the part-time MBAs taught in English by Japanese universities may not be highly valued in Europe. I don't know if the HEC Paris-Keio Double Degree MBA is still available, but language is really essential.

Oh! The Manchester MBA is in Japan now http://promo.mbs.edu.hk/formsubmits/form3/120?gclid=CNjM3p-AorwCFWhjtAodiSoAAA&gclsrc=ds That is a serious option...

I would recommend NUCB Graduate School MBA. It's MBA program is accredited by AMBA, AACSB and probalby EQUIS from this June. It is highly ranked by eduniversal and Bestmaster. The cohort there is the most diversified with students of more than 20 nationalities. You can opt for double degree with school in France (Edhec and others), Germany (HHL Leipzig, EBS) or Alberta (canada)
Good luck with your decision

Would you recommend it to *this person*? What record does it have of placing students who do not speak Japanese into jobs in Japan, or in Europe? Remember, 43% of the students are from France (http://www.nucba.ac.jp/en/program/graduate/glp/) so EDHEC MSc students sent into that MBA returning to France might distort the latter number.

The double degree will be, I think, with the MSc programme at EDHEC and HHL, perhaps at others as well.

Students can choose between Msc and MBA for dual degree. No MBA in Japan can guanrantee jobs for sure. But, since his Japanese is quite good, I do not think that it would be a problem finding job. Other than language issue, I do not find any problem for not recommending NUCB

He says his Japanese is not good enough to study in Japanese, it's it's certainly not good enough to work in Japanese. What MBA jobs can he do in Japan?

If he can reach JPN Level 2, job would not be a problem. Companies that admits non-japanese speakers are growing but still niche market. There are not many Eng-MBA in Japan for him to choose from, actually

With JLPT N2, then they could be studying in Japanese. This person has explained that their Japanese is not good enough for that.