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We could have seen Lionel Messi play alongside Andres Iniesta at national level.
Lionel Messi is heading for Brazil this summer looking to spearhead Argentina's charge to glory in the backyard of their fiercest rivals.
Popular opinion would suggest that if the albiceleste are able to emerge victorious in the tournament that Messi will cement his place in history as the best footballer to have ever played the game.
However, things could've been much different.
In Spain since the age of 13, Messi has dual nationality and qualified to play for Spain. Per Biography Online, he was asked to play for the Spanish U20 side in 2004 but turned down the opportunity and instead turned out a year later and led Argentina to victory in the FIFA Youth Championship.
Graham Hunter noted in his book "Barca - The making of the greatest team in the world" via Nicky Salapu of The Guardian:
Just imagine it for a second – Messi up front for this Spain team. He'd have been more appreciated, he'd have won more trophies, he'd have been playing with club-mates and friends and he'd have been far from the first Argentinian to jump ship to La Roja.
It was never an option however, as Messi himself said:
I would have never played for Spain. I'm Argentinian and no one and nothing can change what I feel for the Argentinian colours.