By Daniel Chavkin The midfielder was scratched from his Austrian Bundesliga match. View the original article to see embedded media. Midfielder Brenden Aaronson is questionable for the United States Men’s National Team’s World Cup qualifiers later this week. Aaronson was supposed to play for FC Salzburg on Sunday, but was pulled before the team’s match vs. Wolfsburg in the Austrian Bundesliga championship. Salzburg mentioned Aaronson will miss the game with what the team is calling “knee problems.” Aaronson has had 18 appearances for United States soccer, accumulating five goals and four assist…