#4 Roman Reigns
Roman Reigns and Daniel Bryan have shared the ring a number of times, both as allies and as opponents. Their match at Fastlane 2015 was a great Face vs Face match which saw The Big Dog pick up the victory.
The Shield (Roman Reigns and Seth Rollins) were the one who ended Team Hell No's (Kane and Daniel Bryan) 245-day reign as the WWE Tag Team Champions.
The Shield stood by him against The Authority, and now with Bryan coming back to action, Reigns could actually get over with the fans if he can put on a great show with Bryan on the other side of the ring.
With Reigns set to win the Universal Championship at WrestleMania 34, Bryan could very well challenge him for the title. The two have extremely different wrestling styles, and that's what is appealing to the fans. A powerhouse going against a high-flyer will be an interesting battle.