The Undertaker, Brock Lesnar, Bill Goldberg and Sting are believed to have expressed their desire to return to WWE, just days after the former WCW and WWE champion Goldberg hinted at his possible comeback in an interview. Goldberg's last match was against The Beast Incarnate at WrestleMania 20 in 2004.

Rumour mills were in over drive about Goldberg squaring off against the Next Big Thing at WrestleMania 33, which is scheduled to be held on 2 April 2017. Further, reports suggest that the four former WWE superstars might just go against each other in a four-way match at the event.

According to HealthAim, Goldberg and Sting have said they are willing to return to square off against the Deadman, who had sparked rumours about his return to WWE when he was pictured with Shane McMahon at a bar on 15 August in Texas. The Undertaker's last fight was against Shane in a Hell In A Cell match at WrestleMania 32 in April.

When wrestlers were picked during the historic brand split earlier this year, The Undertaker was one of the biggest names to be left out. The WWE icon was named one of the top 10 free agents in the market that Raw and SmackDown Live could battle for in the near future. HealthAim has now reported that the organisers are in contact with former wrestlers to fill both Raw and SmackDown rosters in 2017.

Sting recently revealed in an episode of Legends with JBL that he has unfinished business with The Undertaker.

"That's the unfinished business — I've always wanted to have that match, and I know that wrestling fans have always wanted to see it too," Sting said. The wrestler had announced his retirement after he suffered a severe injury at the Night of Champions in 2015. Subsequently, there were reports that said that Sting had been rejecting undergoing a surgery as he believes it could end his career. However, the former wrestler has said that he would undergo an operation only after he settles his score with the man from the grave.

Previously, Goldberg had hinted at his interest to fight Lesnar in an interview. "Over the 11th when the video game comes out I'll be kicking everybody's ass on the roster for sure but you look at me I'm 49 years old man leave it to the young guys to go out there and do their thing I mean more imagine here and more hanging out with Simon and trying to just continually stay in shape," the wrestler had said in an interview.

"No matter how old I am and you never say never but I mean it's getting close to that clock kind of stopping on me but I mean you know you never seen we need one more in may. Man, I still can do it at 49. Brock, you're next," Goldberg said as he ripped a shirt with Lesnar's name on it.

The Undertaker
Former WWE superstar The Undertaker Getty Images