#4 Kane
Put down your knives and pitchforks – we know, this isn’t going to be a popular option. Unfortunately, however, it could be one of the only logical selections remaining given the circumstances. While Cena was able to dispatch of the Big Red Machine on Raw, Kane could come back and demand an ‘inferno match’ or something similar in order to really settle the score with Cena.
Then, after the bout, Taker could come down and lay out Cena with a hellacious tombstone piledriver. That way you could either have him ride off into the sunset without the risk of injuring himself, or you could set up the bout for WrestleMania 35. It doesn’t exactly make the most sense in the world, but you just never know what could happen in the WWE.