-- John Cena is scheduled to be in a huge match at WrestleMania, not against AJ Styles for the WWE title and in fact, in a "bigger match" than Styles that will become clear within the next few weeks.
-- Chances are this hint or revelation will happen at Raw's 25th Anniversary show and with the hint being that it will be bigger than a WWE world title match limits the possible opponents to Undertaker, Goldberg, Batista or Hulk Hogan.
-- With Hogan's advancing age and back problems, it is unlikely to be him as he wouldn't be medically cleared, so the initial speculation is that it will be the Undertaker, who WWE wanted Cena to face last year at WrestleMania 33 before changing plans.
Source: Wrestling Observer Newsletter. Subscription information & prices available at f4wonline.com