Lionel Messi has apologised to Zenit Saint Petersburg striker and Argentina youth global Sebastian Driussi for not recognising him in a photo.
A late goal by Sergio Aguero lifted Argentina to a 1-0 win over World Cup hosts Russian Federation in the inaugural match at Moscow's newly-renovated Luzhniki stadium on Saturday.
Ahead of that contest, the 30-year-old has been fulfilling his usual round of photo and autograph duties. I am experiencing this moment with the national team in a different way.
Barcelona are believed to have offered Messi a lifetime contract - similar to the deal that fellow Barca legend Andres Iniesta signed in early October - that would tie him down until he retires from professional football.
Messi later sent a text message to apologize to his teammate for the misunderstanding, Argentinian sports channel TyCSports reports.
Driussi has represented Argentina at U17 and U20 level, scoring a total of eight goals in 23 appearances, but is yet to join Messi in the full global squad.
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Driussi joined Zenit in a £13.3million deal from River Plate.
Messi, Aguero and Dybala have found the net 39 times cumulatively for their European clubs this season.
Argentina's friendly against Russian Federation was the first test match held at Moscow's Luzhniki stadium, the venue for the opening game and final of next year's World Cup.
Argentina only enjoyed last-gasp qualification for the World Cup after a 3-1 victory in Ecuador in their final qualifying match. It will be the first game at the arena since a $450 million renovation was completed.
The stadium's capacity is set to increase further before the World Cup Final takes place there in front of 81,000 fans on July 15.