According to a report by PWInsider.com, WWE is already planning the next feud for Rey Mysterio and it is with a currently injured WWE Superstar.
According to the report, WWE is planning to have Sin Cara feud with Mysterio upon his return to action in some form, whether that just be a one-off match or a long-term program is unknown.
This would indicate that WWE has some bigger plans for Sin Cara when he returns, with Mysterio currently positioned as one of the top Superstars in WWE right now.
Source :
PWInsider.com