Argentina forward Alejandro Garnacho will miss their World Cup qualifiers against Venezuela and Bolivia due to discomfort in his left knee, the team said on Monday.

The 20-year-old Manchester United winger completed Sunday’s 0-0 draw against Aston Villa in the Premier League but will not join up with the Argentina squad.

Argentina, who lead the standings on 18 points from eight games, visit sixth-placed Venezuela on Thursday and host Bolivia, who are eighth, next Tuesday.

Garnacho was initially called up for the two games, but coach Lionel Scaloni has now replaced him with Leicester City’s Facundo Buonanotte.

Garnacho has seven caps and played in the Copa America in the U.S. where Argentina clinched a record 16th title in July.