CHICAGO -- Jozy Altidore has been added to the U.S. training camp roster before friendlies against Chile and Panama, and defender Brad Evans has been dropped because of tendinitis in his left knee.

Altidore's addition was announced by coach Jurgen Klinsmann on Friday, just after the forward transferred to Major League Soccer and Toronto from Premier League side Sunderland.

Altidore joins Clint Dempsey, Michael Bradley and Jermaine Jones, giving the U.S. eight veterans from last year's World Cup roster. The training camp group also includes 15 players who have never appeared for the national team.

Dallas defender Matt Hedges was added Thursday in anticipation of Evans leaving camp.

Current 28-man roster:

Goalkeepers: Alex Bono (Toronto FC), Sean Johnson (Chicago Fire), Jon Kempin (Sporting Kansas City), Nick Rimando (Real Salt Lake)

Defenders: Matt Besler (Sporting Kansas City), Steve Birnbaum (D.C. United), Christian Dean (Vancouver Whitecaps), Matt Hedges (FC Dallas), Jermaine Jones (New England Revolution), Shane O'Neill (Colorado Rapids), Oscar Sorto (LA Galaxy)

Midfielders: Michael Bradley (Toronto FC), Mix Diskerud (New York City FC), Dennis Flores (Club Leon), Luis Gil (Real Salt Lake), Perry Kitchen (D.C. United), Miguel Ibarra (Minnesota United FC), Lee Nguyen (New England Revolution), Marc Pelosi (Liverpool), Dillon Serna (Colorado Rapids), Brek Shea (Orlando City), Wil Trapp (Columbus Crew SC)

Forwards: Tesho Akindele (FC Dallas), Clint Dempsey (Seattle Sounders FC), Julio Morales (Tepic), Chris Wondolowski (San Jose Earthquakes), Bobby Wood (1860 Munich), Gyasi Zardes (LA Galaxy).