#2. A pointless Rey Mysterio return on Dominik's debut

Rey Mysterio's return to WWE seems inevitable, considering Dominik's situation. While his contract had reportedly expired, Dominik's push had seemingly played a significant role in convincing him to sign a new contract. It seems to be the case where Rey Mysterio wants to transition out of WWE and wrestling in a matter of time to help pave the way for his son.
Tom Colohue reported on multiple occasions that WWE and Rey Mysterio were coming closer and closer to signing a new contract. While this is just speculation, we feel that the contract has already been signed and that Mysterio is simply waiting for SummerSlam to return.
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Having Rey Mysterio return to help Dominik at SummerSlam would be a brilliant way to bring him back, but only if there's a story that comes off it. If WWE was to bring Rey Mysterio back for no reason, it would be a waste of a moment. He's the only other star (apart from Murphy) who needs to and will likely get involved in the match.
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