Top WWE Face Behind Nexus?

The current plan in WWE is to eventually reveal that a top star in the company is behind The Nexus group and is the mastermind behind everything that's been happening on Raw. At this point, two big names that have been pitched by creative are Triple H and John Cena. As far as Triple H goes, it's being reported that he's wanted to turn heel for quite sometime, however injuries to himself and other stars have forced WWE to keep him a face.