#1 Drew McIntyre

Drew McIntyre winning the Money In The Bank match and returning to his old chosen one gimmick is a definite possibility for this year. He is a big heel which means he can beat up whatever babyface is the champion and keep teasing a cash in for as long as he wants. As a big guy though, he shouldn't hold it for too long.
This is also a way to push Drew into the title picture which it looks like the company wants to do as he faced someone as big as Roman Reigns at WrestleMania 35. Giving him the briefcase ensures he is taken seriously by the fans before he wins the title which means when he does eventually cash in people will expect him to win.
If this year's match is used for anything, it should be to give Drew his old theme back because let's all be honest, it was an awesome theme song.
Did a WWE Hall of Famer predict John Cena's heelish ways long ago? More details HERE.