The reason: The brilliant banker does not understand or speak German, the language spoken by current and previous chairmen at the 140-year-old Frankfurt-based bank.
This, despite Mr Jain's division contributing about 80 per cent of the German banking giant's profits.
Does that ring a bell?
Did you miss out on a plum job because you could not speak a foreign language?
Do you believe knowing a foreign language boosts one's career?