Rey Mysterio is currently negotiating with WWE and Global Force Wrestling.
Mysterio is under contract with Lucha Underground through the end of season three, which will air in September. He’ll be a free agent after that but has a 90-day non-compete agreement attached to his deal.
WWE is still searching for a big Latino star after failing to replace Mysterio in the first place. GFW would like to move away from Alberto El Patron after all of the negative press he has brought from his tumultuous relationship with Paige. The current GFW World Heavyweight Champion is suspended indefinitely.
Mysterio, 42, left WWE in February 2015 but has been open to the idea of returning for over a year. His son, Dominick, is looking to follow in his father’s footsteps so Mysterio could opt to return to WWE in hopes that it helps his son’s future.
Lucha Underground could look to retain Mysterio but will likely have a difficult time out-biding WWE should they decide they want to bring him back. They have also not announced plans for a fourth season.