Bryan reportedly said no because it wouldn’t be what he wants because he wouldn’t do much wrestling and would take no bumps. This should be taken as a rumor for now.
WrestleMania 34 is set to be held on Sunday, April 8, 2018, at the Mercedes-Benz Superdome in New Orleans, Louisiana. This event airs on pay-per-view (PPV) and WWE Network. It’s the most successful and longest-running professional wrestling event in history. Both Raw and SmackDown rosters will be featured.
Since the questions have intensified, I can’t confirm anything re: Daniel Bryan. Was told by a source weeks ago they approached him about working Mania & Bryan declined as it wouldn’t be nearly want he wants. Light work, little to no bumps etc. No idea what the story is as of now