Board Thread:Theories and Speculation/@comment-810492-20170517190024/@comment-810492-20170518065517

At the very least, this episode implied that the monster chakra might have something to do with the tailed beasts or at least is somewhere within that ballpark. Boruto asked Shikadai whether he ever heard of chakra manifesting as a monster. It seems like no one had any knowledge of such a phenomenon, but we all know from the older series that the only known case of this is with tailed beast chakra. At this point in time, Boruto was still unaware of Naruto's tailed beast powers.

Anyways, I too wouldn't bet on the monster being the zero tails from the movie. That being said, it would be very cool and surprising if it was. It doesn't necessarily have to be the exact one from the movie either. This could be a sort of reboot for the zero tails, a reintroduction of it without it being directly based on the movie version.