The Wyatt Family are not advertised for any match at Night of Champions PPV tomorrow night. But recently, there was some concern that Bray might be losing momentum & him not showing up on the PPV might be a bad choice.
Here’s a possible scenario that WWE thought of doing. Cena losing to Lesnar clean again at Night of Champions is not good for business as Cena is the face of the company & their cash cow, so the Wyatt Family could interfere in the match & cost Cena his rematch for the title with the storyline being how Cena dominated Bray Wyatt a few weeks back on Raw, so the Wyatts wanted payback.
Here’s the video of John Cena vs. Bray Wyatt from Raw a few weeks back where Cena completely dominated Wyatt :