For the first time in his fledgling career, Matt Polster will don the red, white, and blue.
The Fire rookie was named to the U.S. U-23 men's national team training camp roster, the club announced Friday, and was one of 24 players selected by head coach Andreas Herzog, who will assemble in Manchester, England for the final preparation camp prior to the CONCACAF Olympic Qualifying Tournament in October. The camp will run from Aug. 30-Sept. 8, spotlighting friendlies against England on Sept. 3, and Qatar on Sept. 8.
Polster will depart following the Fire's Eastern Conference bout with Orlando City SC at the Citrus Bowl on Saturday, and will miss the game against the Montreal Impact on Sept. 5 at Saputo Stadium.
[NBC SHOP: Buy a Fire jersey here]
The full U-23 USMNT roster:
Goalkeepers (3): Cody Cropper (MK Dons; Maple Grove, Minn.), Ethan Horvath (Molde; Highlands Ranch, Colo.), Zack Steffen (Freiburg; Downington, Pa.).
Defenders (8): Cameron Carter-Vickers (Tottenham Hotspur; Westcliff on Sea, England), Matt Miazga (New York Red Bulls; Clifton, N.J.), Eric Miller (Montreal Impact; Woodbury, Minn.), Boyd Okwuonu (Real Salt Lake; Edmund, Okla.), Shane O'Neill (Apollon Limassol; Boulder, Colo.), William Packwood (Unattached; Concord, Mass.), Dillon Serna (Colorado Rapids; Brighton, Colo.), Oscar Sorto (LA Galaxy; Los Angeles, Calif).
Midfielders (8): Gboly Ariyibi (Chesterfield; Arlington County, Va.), Luis Gil (Real Salt Lake; Garden Grove, Calif.), Emerson Hyndman (Fulham; Dallas, Tex.), Benji Joya (Club Necaxa; San Jose, Calif.), Marc Pelosi (San Jose Earthquakes; Sunnyvale, Calif.), Matt Polster (Chicago Fire; Las Vegas, Nev.), Wil Trapp (Columbus Crew; Gahanna, Ohio), Gedion Zelalem (Rangers; Bethesda, Md.).
Forwards (5): Alonso Hernandez (C.D. Juarez; El Paso, Texas), Jerome Kiesewetter (VfB Stuttgart; Berlin, Germany), Mario Rodriguez (Borussia Mönchengladbach; North Hollywood, Calif.), Rubio Rubin (Utrecht; Beaverton, Ore.), Maki Tall (Scion; Washington, D.C.).
NOTE: Homegrown midfielder Collin Fernandez, along with U-18 Academy players Cameron Lindley and Mauricio Pineda, were selected by U.S. U-20 men's national team head coach Tab Ramos to take part in the 2015 Stevan Volotic-Cele Tournament in Serbia. Training begins on Aug. 30, with matches slated against Serbia on Sept. 3 and France on Sept. 4, before the tournament concludes with a placement game on Sept. 7.