Aditya Birla Group Chairman Kumar Mangalam Birla has offered to transfer the group's entire ownership in Vodafone Idea Limited (NSEI:IDEA) to the government in a last-ditch effort to keep the cash-strapped telco from collapsing. In a letter to Cabinet Secretary Rajiv Gauba in June, Birla expressed the group's inability to fund the company any further. "It is with a sense of duty towards the 270 million Indians connected by Vodafone Idea, I am more than willing to hand over my stake in the company to any entity-public sector/government /domestic financial entity or any other that the government may consider worthy of keeping the company as a going concern," Birla said in the letter, parts of which were reviewed by Mint. The development marked new thinking by Vodafone Idea's promoters, who were initially looking to onboard financial investors through a mix of debt and equity. An Aditya Birla group spokesperson did not respond to requests for comment.