Really only seems to be a handful of options is Reigns holds the title til Mania, which I believe he will:
1)
Triple H - People will automatically roll their eyes at the prospect of Trips winning the Rumble and getting a title shot at Mania. But it might not be that bad, I mean we know Reigns and him and clashing at some point, it might be before Mania which takes him out of the running.
2)
John Cena - I feel like Reigns/Cena at Mania is going to happen at some point, although this year is probably too soon. The worry is with this match that both guys will end up getting booed and the match gets crapped on.
3)
Brock Lesnar - The most likely scenario I think. Lesnar comes in at the Rumble and obliterates people to win and get his rematch with Reigns at Mania. The worry with this is that Brock likely gets cheered over Reigns, which Triple H might not.
Outside shot:
4)
Dean Ambrose - Having Ambrose win the Rumble and then go with the big build to the clash between the two friends. You could even have Ambrose turn heel in the build up. Let's face it though, Ambrose isn't getting that slot over the three guys mentioned above
