I could definitely see it happening on pop, and it's already making gains on HAC. Just like Royals, it has had alternative success (currently #5 and climbing) and AAA success (currently #1) before crossing over to HAC and pop. However, unlike Royals - and more like an Imagine Dragons or OneRepublic song - it has started to do well on HAC before charting on pop.
Obviously it won't get the rhythmic/urban airplay that Royals had, but I think it's a reasonable bet for a big alternative crossover (as Royals was).
Can't wait for the 1-2 punch of alt. crossover hits this fall (Renegades being the other one).