Jain did not want to financially burden the bank with his own, personal decision to quit
Last month, German lender said it was co-operating with regulators in global foreign exchange probe.
Jain was the architect of Deutsche's investment banking business and placed one of his former trading heads, Alan Cloete, in Hong Kong as co-CEO for Asia Pacific in 2012.
Jain, who, landed the top spot at Deutsche in 2012, had to resign following criticism from investors
Deutsche Bank in India has managed to avoid the bad-loan problems plaguing its rivals such as Standard Chartered Plc.