I am going to start with the rumors to try and help you all sort out what could happen and what likely won't happen. Recently reports have came out that two possible choices are up for the Rumble win. Rumors have pointed to John Cena & Shinsuke Nakamura possibly winning the Royal Rumble. For those wondering this does absolutely mean that Nakamura vs Styles could be in the cards next year after all.
Earlier this week it was reported that it seems that John Cena is out of the discussion for a Rumble win and signs seem to point to Cena having a big match at Mania. At first the rumor seemed to point to Cena heading to Mania and winning to get his 17 World Title, but now things maybe changing. As far as the match John could have at WrestleMania instead of the WWE title it is unknown at this point and could be answered on the 20th Anniversary of Raw. With that being said it seems as though Nakamura could be the only likely choice to fight for the title come WrestleMania. However, this is the rumors and with that out of the way next time we will look at predictions of what could happen later this month.