When people imagine Naruto with Rinnegan they imagine Naruto's eye turning into Rinnegan and casting Shinra Tensei, Chibaku Tensei, etc This is not what will happen if he does, and Kishi has already foreshadowed it with Shisui's eye.
He might and possibly will get an eye technique, however Kishi has shown over and over again that even if he does he wont get doujutsus on his face.
He technically had the most powerful sharingan so far (Shisui's) however it was used in some a way that his biological eyes didnt transformed, yet technically genjutsued Itachi.
So going by what was shown, Naruto may have Rinnegan but his eyes wont transform into it, he will use it by other method, possibly a bodily representation of the Rinnegan or a summon has Rinnegan or something. In this case I imagine his Uzumaki swirls from his body when he is using his transformation will turn into concentric circles.
Naruto may get Rinnegan to match the sage, but it wont be as bad as people think, it will be done in a way that it is bodily and doesnt touch his eyes. Uchihas get the Rinnegan in an eye, perhaps Senjus and Uzumakis have another version of the Rinnegan a bodily one (Nagato didnt got it becuase the Rinnegan was simply transplanted into his eyes, he didnt awakened it properly in his body).
He might and possibly will get an eye technique, however Kishi has shown over and over again that even if he does he wont get doujutsus on his face.
He technically had the most powerful sharingan so far (Shisui's) however it was used in some a way that his biological eyes didnt transformed, yet technically genjutsued Itachi.
So going by what was shown, Naruto may have Rinnegan but his eyes wont transform into it, he will use it by other method, possibly a bodily representation of the Rinnegan or a summon has Rinnegan or something. In this case I imagine his Uzumaki swirls from his body when he is using his transformation will turn into concentric circles.
Naruto may get Rinnegan to match the sage, but it wont be as bad as people think, it will be done in a way that it is bodily and doesnt touch his eyes. Uchihas get the Rinnegan in an eye, perhaps Senjus and Uzumakis have another version of the Rinnegan a bodily one (Nagato didnt got it becuase the Rinnegan was simply transplanted into his eyes, he didnt awakened it properly in his body).