#2 Turned down WWE: AJ Styles

When AJ Styles made his debut in WWE in 2016, fans were rightly shocked. A veteran of TNA Wrestling, the Phenomenal One was a closely recognised to TNA as John Cena is to WWE, so his appearance at the Royal Rumble was a sight to behold.
That's not to say WWE hadn't already tried to get Styles signed to a lucrative contract, as even before AJ joined TNA, he was offered a developmental deal with the then-WWF.
Part of the reason for AJ saying no was his family, as the young Phenomenal Superstar didn't feel right moving his family. Instead, Styles would make a name for himself in TNA, becoming one of the brand's biggest stars. He has had similar success in WWE as a two-time WWE Champion, and former United States Champion.