Longer term "if all goes well Vision Fund should contribute several hundred billion yen in annual revenue", Son said. Thomson Reuters Starmine SmartEstimate puts SoftBank's full-year profit at 1.16 trillion yen, based on estimates from 20 analysts. SoftBank, however, has not released a forecast for the current business year ending March, citing uncertainty. SoftBank's wireless unit Sprint Corp, the No.4 US wireless carrier by subscribers, is exploring options to boost finances through means such as a merger with T-Mobile US Inc or a tie-up with cable provider Charter Communications Inc. Sprint, in which SoftBank has about an 80% stake, last week reported a quarterly profit for the first time in three years as a result of cost-cutting efforts. "There are multiple possible business consolidation partners and negotiations are ongoing," Son said. He did not comment further as an announcement was likely in the "near future".