A video of the child of vice president of San Lorenzo, Marcelo Tinelli, has also surfaced.
He can be seen crying at Messi's decision to step down and, filmed by his mother, he pleads "don't go, because without you we don't win.
"You're the best in the world, don't ever retire, even when you're two hundred years old.
"Please Messi, stay, I don't want you to go, we all make mistakes."