Rey Mysterio, the 43-year-old Luchador has already returned to the WWE twice for Royal Rumble matches and has been announced for ALL IN on Sept. 1 in Chicago.
PWInsider recently reported that Mysterio should be back in WWE within the next month. However it is still unknown whether he will work full time or be a part timer.
He’s expected to be a part of SmackDown Live when he returns.