Cause rivals are a defining trope in Shounen manga
We'll see.
I dislike the whole ordeal of rivals all together. But, like with SHikidai/Boruto, he might have small altercations with shinobi from that stance.
Overall, I don't think we will see any real rivals, similar to the old generation. Wouldn't make much sense considering the fact that he doesn't care about being better than anyone else post-development. If you think about, his real rival was his father, sort of.
He wanted to defeat him, surpass him, and etc,.
Although his intentions weren't genuine, post-development, he figured out his true purpose. Seems kind of weak in my opinion for him to start caring about another person's power level.