Amongst all the discussion over which match should main event WrestleMania 35 in just over two weeks, there's still much confusion over a few WWE icons and their participation at the Grandest Stage of Them All.

The Undertaker's status as of now is unconfirmed but what we do know is that he's set to be involved in WWE's next venture to Saudi Arabia in May, despite wanting to work a 'smarter schedule' this year.

As for John Cena, things have been slightly more complicated as he's currently in Vancouver filming Playing With Fire, which is due to wrap-up six days before 'Mania, so he should be free to compete should he be needed.

The rumoured plan for Cena was for him to face Samoa Joe for the United States Championship, which would have made sense considering his name was brought into proceedings on SmackDown after Joe won the title last month.

That isn't happening now because it was confirmed this past Tuesday that Rey Mysterio will instead be challenging for the gold.

Another theory was that Cena would face Kurt Angle in his retirement match, which would make their feud come full circle after their first-ever match was Cena's debut in 2002.

But with Angle's last bout being confirmed to be against Baron Corbin, that rumour was squashed too - although WrestleVotes have stated that WWE are 're-considering' that match because of the negative backlash from fans was 'unexpected'.

So all has gone quiet on the Cena at WrestleMania front - until yesterday.

The Wrestling Observer Newsletter's latest article notes that the 16-time world champion is still definitely going to compete at Metlife Stadium, per Cageside Seats.

Who will he face though? That's anyone's guess, the match card is filling up but with speculation rife that there could be as many as 17 bouts spanning the Kick Off Show and the main show, there will always be a spot for 'Big Match John'.