#1 Ali
From his poetic promos to his high flying offence, Ali has proven himself to be the real deal in WWE and fans should take notice. He is also the first person to defeat Nakamura after winning the Intercontinental Title, which makes him arguably the best person to challenge him for the title.
Another thing that seems to make the two destined for a collision is the fact that their offensive styles work so well against each other. Think about it this way, the midcard title is in need of a reboot after featuring sparsely throughout the last few months and what better way to do that then to put an underdog like Ali up against a destroyer like Nakamura?
In the end, the Intercontinental Title needs to start mattering again and a great way to do that is to put these two together. If nothing else, it will at least create an interesting series of matches between the two, help Nakamura have a memorable run as champion and maybe even put over Ali in the end!