U.S. Soccer has announced that midfielder Kellyn Acosta, defender Matt Hedges and midfielder Kekuta Manneh have departed the U.S. national team’s January camp.

FC Dallas duo Acosta and Hedges left with a mild left ankle sprain and mild right knee sprain, respectively, while Manneh — who is in the process of completing his eligibility requirements to play for the U.S. after securing his citizenship — will join the Vancouver Whitecaps on their preseason tour in Wales.

The U.S. will kick off Bruce Arena's second spell in charge with a friendly on Sunday against Serbia in San Diego. Five days later the U.S. will take on Jamaica in another friendly in Chattanooga, Tennessee.

Full USA roster:

GOALKEEPERS (4): David Bingham (San Jose Earthquakes), Nick Rimando (Real Salt Lake), Luis Robles (New York Red Bulls), Brian Rowe (LA Galaxy)

DEFENDERS (9): DaMarcus Beasley (Unattached), Steve Birnbaum (D.C. United), Brad Evans (Seattle Sounders FC), Greg Garza (Atlanta United FC), Taylor Kemp (D.C. United), Chad Marshall (Seattle Sounders FC), Keegan Rosenberry (Philadelphia Union), Walker Zimmerman (FC Dallas), Graham Zusi (Sporting Kansas City)

FORWARDS (5): Juan Agudelo (New England Revolution), Jozy Altidore (Toronto FC), Jordan Morris (Seattle Sounders FC), Chris Wondolowski (San Jose Earthquakes), Gyasi Zardes (LA Galaxy)