By Joshua Browne Manchester United’s hopes of making a fast start to the coming Premier League season have been boosted by confirmation that winger Alejandro Garnacho will not be part of the Argentina squad for this summer’s Olympic Games. The Red Devils are gearing up for a hectic pre-season, eager to turn the page after a mostly disappointing 2023/24 campaign. Winger Garnacho is currently dazzling specators in the United States with his performances for Argentina in the Copa America. There had been speculation that he might also represent his country in Paris later this month but, after push…