If the reports are correct about the time, he won't be back until Mania season next year. What a bummer.
Not only does this kind of throw NXT into disarray, I'm assuming that any call up's might have to be put on hold. Another bummer. Surely they will go ahead with Takeover and just change the matches around.
The one good thing about this, is that it gives him time to really get down and do the one thing that's holding him back, learning English. He'll have lots of time during rehab to learn the language.
This is why even trying to speculate what will happen at the next PPV or two is always a mistake. In the last couple of weeks, Itami, Zayn, Riley, Goldust have gone out with injuries. Daniel Bryan is still a huge question mark. It's a very unlucky time to be a wrestler right now it would appear.