Which WWE star will retire next?

Well. Over the year's star's who have shaped the WWE and delivered pion that no one else could. That was guy's like The Rock, Stone Cold Steve Austin, Hulk Hogan and Ric Flair. so far Ric Flair has retired, I think it could be Undertaker the guy still has like 10 year's at least left to wrestle. But then again Undertaker could be around until the WWE pushe's enough star's to fill in the emptyiness left behind by guyz like Rock, Austin, Hogan, Foley, and Flair.