Nice, Naruto and Sakura are in the Kamui dimension now. That means they might have a serious and long talk about basically everything which is team 7 (+love) related
in there. This is the perfect moment for them to clear up everything (confession, Naruto's feelings, Sakura's (non-existing) feelings for Sasuke). This time Obito is the
cupid instead of Yamato lol.
It's probably gonna be like this: Obito can't heal Naruto ---> Sakura wants to use Kicho Tensei ---> Obito says to Sakura that he's like Naruto (Obi x Rin parallel) ---> Obito uses Rinne Tensei ---> NS canon + Naruto gets the Rinnegan, OMG that woud be so awesome.