Expert Poll: Who should be The Undertaker's final opponent? 

Gary Cassidy - Sportskeeda and The BBC

Gary Cassidy says it's a question only The Undertaker can answer

Gary Cassidy is a freelance journalist and an official columnist for Sportskeeda. Gary is one of the go-to wrestling journalists in the UK, having had the opportunity to sit down with the likes of Triple H, Stephanie McMahon, Chris Jericho, Charlotte Flair, and Kurt Angle.

Gary also creates video content for BBC, writes for WhatCulture, and is regularly featured on the Wrestling Daft podcast as well as TalkSPORT's talkWRESTLING show.

Getting to know Gary over the past year I've learned he's never shy to share his opinions. When it comes to the subject of Taker's final match, Gary is of the opinion, that his opinion does not matter. He says however, wherever and with whomever The Deadman decides to end his career, it'll be good enough for Gary Cassidy.

Whatever the Phenom believes is the best way to close the book on his career

"The prospect of the Undertaker retiring is one I'm unsure will ever happen, but I believe we may find out how likely it is by June 21st, when the dust settles and the credits roll on Chapter 5 of The Last Ride.

For many years, I found the idea of the Undertaker retiring as a pretty impossible concept to comprehend.

I always thought closing the book in a WrestleMania match with Kane, and both men saying their goodbyes at the same time in an embrace after a singles match, would be the perfect ending to that saga. Of course, many will say the dream match with Sting is THE match we have to see.

However, after the Roman Reigns match, I think we had the perfect moment - from putting over a young talent on the Grandest Stage of Them All, to the Showcase of the Immortals taking the mortality of The Deadman as he broke character for the first time ever.

Now, though, much like The Deadman's own wife, Michelle McCool, acknowledges in the monumental docu-series, Undertaker seems - or seemed - to be trapped in a vicious cycle of either having an amazing match and wanting another, or having a sub-par match and needing another for redemption.

One interesting note during The Last Ride was that Taker said he wished he could have worked with AJ Styles, so maybe the series ends in the revelation that we've already witnessed the retirement match just mere weeks ago - but for me, the ending is no longer important.

Via the Undertaker, Mark Calaway has given us 30 years of entertainment, enigma and mystique that will likely never be seen again. Whenever The Deadman decides it's time to hang up his boots, or whether he even does at all, is completely fine by me."