Hello,
I received admission offers from EDHEC and CASS, and now I have choose between two. I am in a dilemma because I both business school's are well reputed in their respective countries.

Profile:

Bachelor of Technology in Mechanical Engineering from India.

I am an Indian male who has 13 years of work experience in IT and Business solutions within financial services (first 12 years in asset servicing) and motor insurance sector. Since July 2018, I have been working as a Business solutions manager with an insuretech ( motor insurance brokerage) startup in Thailand. In the past I worked extensively in asset servicing sector as a business analyst with TATA consultancy services for 7.5 years ( 4.5 years India and 3 years Singapore) and senior business analyst with Societe Generale for 4.5 years (8 months France).

In SocIete Generale, France and Frankfurt, I have connections that can help me in post MBA jobs.
In UK I have good alumni network, which is from my Engineering school. I will be able to take their help in job searches.

Transitions:

Through my career I did two successful transitions. First, in 2009 from an IT Programmer to business analyst within asset servicing. Second, in 2018 from asset servicing sector to motor insurance sector.

Post MBA aims:

I want to transition into leadership roles ( business owner, product owner/management) in financial services ( fin-tech, banks) sector of Europe.

Dilemma:

I know EDHEC is a prestigious grande ecole for finance, and it has very good career services. Moreover they offered 30% scholarship. In France I will have enough time to search jobs selectively because of relaxed and open immigration laws. However, I don't speak French and perhaps this will be a hurdle in many job functions and openings. Moreover, my child will have to study in International schools (English medium) that will have yearly expenses of € 20K or more.

Cass is a well renowned business school globally and its location, the city of London, is no match. They didn't offer any scholarship. Its MBA programme is well know for finance. However, post MBA I will have just 3-4 months to find job and settle down. Although I will start networking before joining the programme, still I am not sure what impact BREXIT will have on immigration rules. As compared to Paris, UK will be easier to settle down because my child can go to public schools.

I have stronger inclination towards CASS, but still please advise.

I am an alum of both schools. Cass has a marginal edge on placement, but both are well below similarly ranked schools like Cranfield, Imperial or Warwick when it comes to quickly getting students into employment. Read my post, linked on my profile page, about scholarships.

Obviously if you have not already learnt French it's perhaps not a language and culture that really inspires you. Many people with your background would tend to not send their kids to London's public schools, but at least you have the choice.