4. Kane
Well, since he's just been mentioned, let's look at the Big Red Machine. He's in the background of The Authority storyline so could easily break away from it to challenge his brother one last time. The reason why this match could happen is because there is a very real chance that this is the last year that both Callaway and Jacobs are on the roster. Both men know each other well and the storied history between the two lends itself to one last match. It wouldn't necessarily be the clinics we've seen recently against Michaels or Punk but the history of the match would sell it to the fans. The loss of Paul Bearer was controversially used last year but in 2014 it's likely that he'll be inducted into the Hall of Fame. Would this lend itself to the final chapter of the story between the Brothers of Destruction? Perhaps. Either way, any time we see those two in the ring together, a special feeling is felt by all.