The sources had stated that Uchiyama has asked for a bit longer to make his decision, with some stating he's asked for several more months to decide what to do, essentially ruling out any chance of fighting in the first half of 2017.
At the moment the next big Watanabe gym show hasn't been announced, though there have been a multitude of rumours suggesting that Watanabe have reached out to various promoters about a contest with WBA Light Flyweight champion Ryoichi Taguchi's (25-2-2, 11) [田口良一], the only Watanabe gym fighter currently holding a belt. There had been rumours of a June date for Taguchi, but sources have indicated that the original plans have since fallen apart.
Although it's clearly a frustration for the Watanabe gym to not be sure if it's star man is retired or not Mr Watanabe has stated that he will accept Uchiyama's decision either way. Given the way the gym is performing right now however it seems very clear that the gym is bouncing back from a torrid 2016, and that new world champions are on the horizon for the Tokyo based outfit.