It has to be Cena VS Lesnar III.
With Lesnar retaining via DQ at NOC, Cena is the only logical option to fill the role of a challenger. CM Punk is gone, Daniel Bryan is injured, Roman Reigns is injured, Dean Ambrose is another feud, and you can't do a heel VS heel match with Orton. With the way things are now, John Cena is the only man on the roster, who's a threat to Lesnar, and the only man, who can face him as a logical opponent.
With the Cell, you have a structure to block any outside shenanigans, including another Rollins cash-in and outside interference, and Cena and Lesnar finally settle the score to prove, who's the better man.
With Lesnar retaining via DQ at NOC, Cena is the only logical option to fill the role of a challenger. CM Punk is gone, Daniel Bryan is injured, Roman Reigns is injured, Dean Ambrose is another feud, and you can't do a heel VS heel match with Orton. With the way things are now, John Cena is the only man on the roster, who's a threat to Lesnar, and the only man, who can face him as a logical opponent.
With the Cell, you have a structure to block any outside shenanigans, including another Rollins cash-in and outside interference, and Cena and Lesnar finally settle the score to prove, who's the better man.
