U.S. coach Jurgen Klinsmann has released four players before Tuesday's exhibition game at Ireland, including three whose teams are preparing for Major League Soccer semifinals.
New England midfielders Jermaine Jones and Lee Nguyen were allowed to return to the U.S. along with Seattle defender DeAndre Yedlin after Friday's 2-1 loss to Colombia in London.
Also released was defender DaMarcus Beasley.
No players were added, leaving a 21-man roster to face the Irish in Dublin.
Ireland allowed captain Robbie Keane to rejoin the Los Angeles Galaxy before Sunday's first leg against Seattle. The Revolution play the New York Red Bulls in the other semifinal.
Playing in Europe since Klinsmann's hiring in 2011, the United States are 4-5-2, falling under the .500 mark following last week's defeat to Colombia in London.
"I think for us it is just great to come to Europe and get tested, get bench marked and get experience and hopefully improve our team going forward -- as much as we can, as quickly as we can," Klinsmann said. "I think with Ireland we have a team that is on the rise, a team that is doing very well in European 2016 qualifiers with obviously a bunch of players from the Premier League, Championship -- they are proven players. So that will give us another strong and demanding test."
Even against a weakened Ireland squad, Ireland is also coming off a tough loss in Scotland in Euro 2016 qualifying and Tuesday's match will be challenging for the United States, Klinsmann said.
"We want results, we want to earn respect wherever we go and wherever we play those games and here and there it works well and in other places you come away with that piece of experience that you are still missing some pieces -- that you still have to improve some areas, which you are constantly working on," Klinsmann said. "But if you don't approach those games with a high difficult level then we won't get those answers -- then we can make it easy and play every game at home and chose nations that we have a bigger advantage. I'm not developing this programme, I'm not getting the team to another level."
Former American defender Steve Cherundolo, who is coaching Hannover's U-15 squad this season, joined the U.S. camp this week as an assistant.