#2 Seth Rollins

The Kingslayer has carried Raw on his back for the whole year. He is the current Intercontinental Champion, and is currently involved in a feud with Dean Ambrose. Rollins has put on great matches every week, and has truly gotten the fans behind him.
If Rollins were to become the Royal Rumble winner, he will first have to lose the Intercontinental title, and he could lose the title at TLC where he will be facing Dean Ambrose. This would also help create new storylines for Ambrose.
Rollins has won everything in WWE except the Royal Rumble. All the great superstars have a rumble win in their career, and Rollins would need one for him to be considered an all-time great. Next year's Royal Rumble is the perfect time for Rollins to win. Also, according to some reports, he will be facing 'The Beast Incarnate' at WrestleMania 35
Rollins and Lesnar have plenty of history which could come into play. We can be sure that they will create an amazing rivalry and have a great match at WrestleMania 35.
Major rumor about recently released stars HERE