The leading scorer in Arsenal history, Thierry has scored 42 goals in 94 matches for Red Bulls. Arsenal said ''the fact that Thierry is the New York Red Bulls club captain makes this a particularly special fixture.''
The July 26 game at Red Bull Arena will be Arsenal's only match outside Europe this summer.
Arsenal last played in the U.S. on Aug. 6, 1989, beating Argentina's Independiente 2-1 at Miami Gardens, Fla., on a pair of goals by David Rocastle.
New York and Arsenal tied 1-1 in an exhibition at London in 2011.