An image on the WWE's website has seemingly spoiled that Rey Mysterio will make an appearance in the Greatest Royal Rumble match.
The image appeared briefly on WWE.com, and showed the former world champion amongst various superstars, many of whom have already been announced for the historic match.
Mysterio last appeared at the men's Royal Rumble match in January, entering at #27, and eliminated NXT's Adam Cole.
Since then, there have been talks of Mysterio returning to the company, though the process seems to be moving slowly.
The Greatest Royal Rumble will take place on April 27 at the King Abdullah Stadium in Saudi Arabia, and will be viewable on the WWE Network.