As it turns out, WWE legitimately does not know if Daniel Bryan will be ready for Money In the Bank. WWE got some bad news so that caused them to make changes to the script. Originally the plans called for a Buried Alive match for Daniel Bryan vs. Kane. If Daniel Bryan does return by Money In The Bank then most likely he would be returning early before he's fully recovered. His neck injury is a major concern within the company.
It is very possible that Bryan will not be able to wrestle on the show and will have to be stripped of his title.
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