It’s been previously reported that WWE will hold this year’s SummerSlam on August 21st and they want a big main event and guest host to make the show ‘stadium-worthy’.
There are rumors that Roman Reigns is defending the Universal title against John Cena in the main event of this show.
WWE is in talks with Cena to appear on the July 16th episode of SmackDown, but those talks were not finalized yet. People in the company have discussed Reigns vs. Cena although it is not confirmed yet.