Board Thread:Boruto Discussions/@comment-25319479-20170331095122/@comment-734582-20170401212005

Vladosaurus wrote: The whole worrying thing it's a weird argument. Momoshiki is dead. The Rinnegan can interact with the dead. We've seen dead spirits give powers to people in proxy before.

Secondly, not telling Naruto isn't a big deal. It's only unnecessary burden when they have no idea what it is. It's not a conventional seal because Sasuke apparently can't tell what it does despite having two dojutsu that can see chakra. For the time being it's better to monitor the situation and inform naruto when they have more substantiation information than "he has a weird spot on his hand". After all, Naruto did entrust Boruto to Sasuke before.