IRDA has turned down India-born Canadian billionaire investor Prem Watsa’s proposal to acquire the two-year-old reinsurance firm ITI Reinsurance from Sudhir Valia-owned The Investment Trust of India Ltd, due to some fundamental problems that violate the current regulations. Sudhir Valia is brother-in-law and an associate of Sun Pharmaceuticals promoter Dilip Shanghvi.