There has been a lot of speculation over whether or not The Undertaker will wrestle another match and if Daniel Bryan will be healthy enough to return to the ring, and Kane recently weighed in on these topics.

The Undertaker's status is unknown as there have been rumors he may retire after falling to Brock Lesnar last April at WrestleMania XXX. In the loss, 'Taker fell to 21-1 at WrestleMania, losing The Streak, and he also sustained an injury.

Due to the injury and loss of The Streak, it has been believed that The Undertaker may now retire from wrestling, though Steve "Sting" Borden has said he wants to face him in March at WrestleMania 31.

Kane spoke to The Turnbuckle Weekly about The Undertaker possibly returning.

"I don't know. You know, I don't know. He's one of the greatest competitors of all time," Kane said. "I think what it's going to come down to with 'Taker is that if he believes he can perform at the level he wants to perform at, that's going to be the determining factor. That's going to be for him to decide and no one else."

There is also a lot of mystery surrounding Bryan's status as it was announced last week that he will have to undergo a second surgery and there is some fear he may never be fit to return to in-ring action.

Bryan had to undergo surgery in mid-May to repair damage in his neck he accumulated due to years of wear and tear from his in-ring style.

After the procedure, Bryan lost feeling in one of his arms and hasn't been 100 percent since. Bryan went back-and-forth with doctors over whether or not he should have a second operation, but The Big Show announced at last Tuesday's SmackDown tapings that he will need to.

Kane weighed in on Bryan's injury, which forced him to forfeit the WWE World Heavyweight Championship after winning it at WrestleMania XXX.

"He's a very resilient guy and he's going to be back," Kane said. "Unfortunately, it's just one of those things. That's what happens with injuries of this type. When you're dealing with nerves and things like that, even the best doctors in the world aren't always sure what's going to happen. He's really tough and the guy has fighting spirit. He's going to be back at some point and hopefully sooner rather than later."

While there have been a lot of rumors, it remains to be seen if and when The Undertaker and Bryan will return to the squared circle.

For more coverage, follow us on Twitter @SportsWN and Like Us on Facebook