#1. Daniel Bryan
SmackDown superstar Daniel Bryan has openly admitted that his run as a full-time wrestler is going to end in two years. He cited family as his main reason, but health plays a vital factor in this too. It's no secret that Daniel Bryan is thoroughly checked after every match to diagnose any potential concussion symptoms.
WWE has been very careful when it comes to clearing him and rightfully so. It's a miracle that he's even wrestling on this level after all that time off and the fact that he's still a full-time superstar.
Daniel Bryan is on borrowed time and that's something that we just have to learn to accept. That still means that we're going to get a couple of more years of him but we should take into account the high possibility that he gets an injury. Of course, that would mean that he would have to take a longer time off. Even so, two years without injuries is not that long and it's going to be a sad day when he has to retire once again.
Also read: 5 reasons why Daniel Bryan wants to retire from full-time wrestling in 2 years