Rey Mysterio continues to float his name out there and express interest in returning to WWE. Rey has made it clear that he would like to return to WWE on more of a part-time basis.
We reported here on Wrestling News World Premium back on November 5, 2015 the return of Alberto Del Rio [to WWE] actually hurts Mysterio.
While Mysterio is committed to Lucha Underground for one season, he’d hoped to be back to WWE after that. While that’s still possible, they aren’t going to spend as much on him now. WWE preferred Del Rio over Mysterio because even though Del Rio is only two years younger, he doesn’t have the same injury history and is the size WWE prefers.
Further, Vince McMahon took it personally when Mysterio wanted out of his WWE contract and that's a situation that also must be resolved to get him back.