Lionel Messi press conference: From Mike Tyson imploding to LeBron James droning and Tiger Woods grovelling – the sporting world waits for its next big address to the public

You know it's big news when a sportsperson calls their own press conference.

In the case of Lionel Messi, it's a story before a word is even spoken.

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The Argentina legend will address the world live from the Nou Camp at 11am on Sunday to talk about the shocking end to his Barcelona career.

After 21 years, 778 appearances and 672 goals, Messi's time in Spain is over after Barca failed to agree a new contract due to La Liga's financial regulations.

It's thought that Messi was desperate to stay, even agreeing to half his previous salary, but instead he will take to the stage a free agent.

Paris Saint-Germain are thought to be winning the race for his signature - and the media will have so many questions for the 34-year-old.

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What really happened? How do you feel about it? What are you going to do next?

From tears to anger, announcing his next club to begging for a solution in which he stays, the possibilities are truly endless.

It has the potential to become one of the most iconic press conferences in sport's history, joining a prestigious list which we have literally come up with just now.

Let's take you back to 2002, when Mike Tyson absolutely lost it in the build-up to his fight with Lennox Lewis.

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If Messi steps onto the podium and starts screaming 'YOU CAN'T LAST TWO MINUTES IN MY WORLD' - that really would be something.

All hell broke loose, with Tyson threatening to kill audience members, before biting Lewis on the leg as punches flew around the room.

Unfortunately, Sunday's event is unlikely to see that level of violence - but we might get some sadness.

Tiger Woods probably holds the record for the most painful press conference in history, apologising to everyone, including his mother, on live television back in 2010.

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The iconic golfer sent the world's media into frenzy when a string of affairs were revealed, eventually resulting in the end of his marriage.

Messi, of course, has nothing to be sorry for, but Barca fans will want someone to apologise for breaking their hearts - and we can see this getting emotional.

There is always the chance, however, this becomes a massive anticlimax, like when LeBron James announced his decision to leave the Cleveland Cavaliers and join Miami Heat.

Back in 2010, the legendary basketball player made 13 million people sit and watch him drone on for 30 minutes before eventually telling them what he was going to do.

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That was the only reason anybody switched on - and we can't imagine many bothered with the remaining 45 minutes of waffle.

There is, obviously, no guarantee Messi will reveal any details about his next move - but if he does, we can only hope he doesn't decide to walk the world through his decision in the most boring and unnecessary presser ever.

Over to you, Lionel.