John Cena is back!The 44-year-old star made an epic surprise return to the WWE during Monday's Money in the Bank pay-per-view event, seemingly throwing his hat in the ring for the upcoming SummerSlam title.During the final moments of the show, just after Roman Reigns defeated Edge to retain his Universal Championship title, Cena's iconic theme music kicked in, and the 13-time WWE champion stormed the ring.