#8 How will The Undertaker respond?
There are only a few legends whom The Undertaker hasn't faced at WrestleMania. It is quite sure that John Cena will no longer be on that list. Hence, whether The Undertaker accepts John Cena’s challenge is no more an unanswered question (well, unofficially).
The real dig lies in how he is going to respond? There are rumors that "The Phenom” will retire his “Deadman” character for good and will bring up his “American Badass” avatar. If he decides to do so, it will be intriguing to imagine how WWE will be after Wrestlemania 34?
The bigger question here is whether he will show up himself on Raw, or will he just “do something” to convey his answer. Given that The Undertaker hasn’t shown up yet, it makes more sense if he accepts the challenge using his signals, and makes his return on the night of the match.
How about the lights turning off and the motor engine revving?