2: May leave: Brock Lesnar

The current Universal Champion, Brock Lesnar is perhaps the most controversial Superstar in the WWE today.
Returning in 2012, Lesnar has held the WWE Championship once since returning, and the Universal title twice.
All of these reigns have been mired in controversy, as fans and Superstars alike have grown frustrated at Lesnar's cushy deal, which allows him to make a handful of appearances a year.
With Lesnar looking at heading back into the Octagon soon though, his time with WWE may be coming to an end.
His next confirmed match in WWE will take place against Seth Rollins at WrestleMania 35, which could be a perfect way to write the Beast out of the company.
A huge loss for sure, but there'll be plenty of fans who will want to say good riddance to the Beast.
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