Former NFL star Shawne Merriman, who we reported several months ago was being groomed for a possible announcer and/or wrestler position in WWE, never actually signed a contract with the company.
The categorization of things now is that Merriman was simply making a guest appearance on the WWE Network during WrestleMania XXX weekend, however the impression at the time was that he was looking to become an announcer for the company while training to become a wrestler.
(Credit: Wrestling Observer Newsletter)