Argentina already announced XI vs Colombia: Messi, Aguero & Di Maria upfront

During the press conference before Argentina's opener with Colombia, Scaloni announce the starting XI in advance

Argentina starting XI: Armani, Saravia, Pezzella, Otamendi, Tagliafico, Lo Celso, Guido Rodriguez, Paredes, Messi, Aguero, Di Maria
Argentina will face Colombia at 00:00 (CET) as their first match of 2019 Copa America

Possible formation (4-3-3):