#4 Returns as part of Team NXT
This would be the ultimate swerve in some senses as NXT is Triple H's brainchild - a man with whom CM Punk gets on..umm..swimmingly well.
However, given that the members of both Team RAW and Team Smackdown have already been announced, team NXT presents the only conventional opening for CM Punk to insert himself into the match.
New Champs in WWE! More RIGHT HERE
In fact, the addition of CM Punk to the NXT roster could be the ammunition needed for WWE during Wednesday nights after the Black & Gold brand's move to USA Network.
Punk wouldn't need to work the exhaustive dates that the main roster does and could still feature prominently in more wrestling-centric programming that is NXT.
'Best in the World', goes his moniker. Wrestling in NXT would be his chance to prove it.