**Lionel Messi's retirement from Argentina's national team in late August 2026, following the 2026 World Cup final loss to Spain, stands as the dominant factor behind the strong trader consensus against his participation in the 2028 Copa América.** At age 39 during that tournament and set to turn 41 by the 2028 edition, Messi ended a record 207-cap international career that included two Copa América titles (2021, 2024) and the 2022 World Cup. Argentine Football Association president Claudio Tapia emphasized the decision rests entirely with the player, with no institutional pressure applied. While Messi continues with Inter Miami through 2028, the confirmed international retirement removes any realistic path to selection for the next CONMEBOL tournament unless he reverses course.