Cash-rich Vodafone(s vod) is keen on becoming India’s largest mobile carrier by buying out Tata Teleservices, according to a report in the Economic Times. Vodafone is currently the number two player, not far behind Bharti Airtel (155 million subscribers to Airtel’s 196 million), and Tata DoCoMo is around sixth place with 90 million subscribers. However, according to the report, Japan’s NTT DoCoMo – Tata Teleservices’ partner – has the right of first refusal for Tata’s majority stake in the venture. If NTT doesn’t want to buy out Tata, Tata could potentially force NTT to sell out alongside it. Vodafone declined my request for comment.