#3 Sami Zayn
Sami Zayn is another superstar who has been out with a long term injury, requiring double shoulder surgery and is ready to be brought back. He was reportedly cleared a month ago, but is likely being reserved for the night of surprises, the Raw after WrestleMania.
Zayn's return would surely garner a monster pop, no matter the circumstances. His talent, charisma and overall enthusiasm would surely be a huge boost to Raw. He will likely return as a babyface, contrary to the heel he was last playing because absence absolutely makes the heart grow fonder.
However, there is a much more attractive proposition for Sami Zayn's return. A week after WrestleMania, the Superstar Shakeup episodes of Raw and Smackdown will take place in Montreal, Zayn's hometown. That would ultimately be a better place for the former NXT Champion to return to WWE.