#3 Johnny Gargano
Michaels has name-dropped Johnny Gargano as a wrestler that he would want to face, and we can't agree more. How can you not face someone who's name is Johnny Wrestling? Gargano and Michaels have styles that could mesh perfectly together and they can create something that no one expected.
This is one of the very rare scenarios where you could have Michaels come back as a heel. He could be really upset at people like Gargano who are these 'new' wrestlers that think that they are better than the old school. Gargano chooses to respect and admiration while facing Michaels and doesn't resort to disrespecting Michaels. Michaels taunts and taunts, but Gargano wants to do it all in the ring and that is it. This would be a wonderful tenet to walk into a match between these two, which would definitely create magic.