According to Daily Wrestling News, Rey Mysterio has still not signed a contract with AAA to work Lucha Underground, and with the future of the show still undecided, Rey is reportedly exploring the possibility of a WWE return.
Mysterio has recently gone on record saying he left WWE on good terms and was very respectful towards them. This is said to be Mysterio doing damage control.
From WWE's perspective, it's unclear whether they would bring him back, due to his injury troubles in recent years and his age (40). Plans could change though, as the WWE has been unable to find a top Latino superstar to replace Mysterio.
Mysterio could very well do some work similar to Chris Jericho and work some international tours, particularly in Mexico, to bring some drawing power.
Would you like to see Rey Mysterio return?