Delhi Chief Minister Arvind Kejriwal on Saturday wrote to Prime Minister Narendra Modi requesting him to stop proposed privatisation of IDBI Bank.In a letter, Mr Kejriwal said, IDBI is a profit making entity and selling of shares of profit making bank is not a good decision.He also said, the Non Performing Assets of IDBI are mainly dues recoverable from big industrial houses.He urged the Centre to give a free hand to the officials of the bank to recover money from big industrialists and strong action be taken against people like Vijay Mallya.