United States Under-18 men's national team coach Javier Perez has named a 20-man roster for the team's upcoming training camp in the Netherlands, US Soccer announced Wednesday.

The camp, schedule for Sept. 6-17 in Mill, Netherlands, will see the team face their Dutch counterparts, as well as U-18 teams from club sides Feyenoord, Borussia Dortmund and Club Brugge.

Highlighting the roster are a trio of players who have already signed professional contracts with MLS clubs – FC Dallas' Kellyn Acosta (12, above), Chivas USA's Marco Delgado and the Philadelphia Union's Zach Pfeffer.

The three pros will be joined by 13 players set to participate in the upcoming 2012-13 US Soccer Development season and four foreign-based players.

Piakai Henkel, currently with Amiens SC in the French third division, will make his first appearance in a US U-18 camp, as will Bayern Munich forward Julian Green, who has also appeared for Germany's youth national teams. Romain Gall, also based in France with Ligue 1 side Lorient FC's youth system, and Stoke City youth player Kristian Scott were recalled after participating in camps earlier this year.

US U-18 MNT Roster By Position:

Goalkeepers: Ethan Horvath (Unattached; Highlands Ranch, Colo.), Zackary Steffen (Maryland; Downington, Pa.).

Defenders: Michael Amick (De Anza Force; Sunnyvale, Calif.), Suliaman Dainkeh (D.C. United Academy; Reston, Va.), Dylan Greenberg (Albertson SC; Dix Hills, N.Y.), Trevor Haberkorn (Solar Chelsea SC; Roanoke, Texas), Jalen Markey (Seattle Sounders FC Academy; Renton, Wash.).

Midfielders: Kellyn Acosta (FC Dallas; Plano, Texas), Marco Delgado (CD Chivas USA; Glendora, Calif.), Romain Gall (FC Lorient; Herndon, Va.), Jacori Hayes (Baltimore Bays; Bowie, Md.), Piakai Henkel (Amiens FC; Arcata, Calif.), Kristian Scott (Stoke City, Winterbourne, England)

Forwards: Jordan Allen (Real Salt Lake Arizona; Rochester, N.Y.), Paul Arriola (LA Galaxy; Chula Vista, Calif.), Julian Green (Bayern Munich; Tampa, Fla.), Benjamin Lopez (Real Salt Lake Arizona; San Diego), Zach Pfeffer (Philadelphia Union; Dresher, Pa.), Ben Spencer Jr. (CD Chivas USA; Albuquerque, N.M.), Travis Wannemuehler (Indiana Fire Academy; Evansville, Ind.)