John Cena

There are rumors that John Cena might now show up for the Rumble Match this Sunday. He has injured his ankle in his match against Finn Balor, Drew McIntyre and Baron Corbin for the No.1 contender match for the World Heavyweight Championship.
If he does show up for the match, we can expect a lot from John Cena.. He will surely remain in the match until the very end, but he won't win the match because of his resolution that he will push new talents as he is passing the baton.
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John Cena is busy these days with his Hollywood career. With so many outside projects taking his time, the chances of him winning are probably not on the horizon. With that being said, WWE may pull a fast one on the audience and allow him to win.
Chances: Moderate
Drew McIntyre

There were many rumors that Drew McIntyre is the next Roman Reigns, and he will receive a lot of push in the latter's absence. But, that has cooled off in the last few weeks as he received his first defeat at the hands of Dolph Ziggler in a normal episode of RAW which has didn't help advance his character to the potential it deserves.
As for the match, his chances of winning are very high, and we can expect multiple eliminations from him easily.