'Whilst he would feature from start to finish, a problem with his pubis means that Messi will not play in the second friendly of the worldwide break'.
A representative of Guaido posted a photo of a meeting with the team prior to the match and Dudamel said: "I have spoken with the vice president and I have put my job at the disposition of the directors because all this time we are navigating very turbulent waters".
"When we chose to bring him back, he knew it was a big change", Scaloni said about Messi.
"Now what remains is try and get the team to play along with him and get the best out of him".
Lionel Messi's return to the Argentina side for the first time since the World Cup ended in a 3-1 defeat by Venezuela.
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"We have a way of playing and feeling football in these six games we've had".
However, it is no guarantee that Mini-Messi would end up being as good as the real version - because of environmental and educational impacts as well as experience. "We need them to give something extra so we can be a great team".
"We've played different systems and we're going to do it in the same way, added to his great quality", Scaloni added.
Since the disappointing World Cup exit Messi has missed Argentina's subsequent friendly games under new a manager Lionel Scaloni who was appointed after the tournament in Russian Federation.
Messi took a sabbatical after his country's last-16 exit from the 2018 finals in Russian Federation but he returned with a clean shaven new look to captain the side in the all-South American affair at Atletico Madrid's Metropolitano stadium.
"In the first half we created chances but they scored twice when we made mistakes", said Lautaro Martinez.
"Having the best player in the world on the field increases the expectations about this match", Dudamel said.