Barcelona face a heavy financial blow after the cancelation of their friendly against Juventus.
The match in San Francisco was canceled due to a stomach bug which ran through Barca's squad last week.
It means Barca have lost $2-3m from ticket sales for the game.
The Catalans next meet Arsenal in Los Angeles on July 26.
The club said: "FC Barcelona would like to encourage its fans to attend and enjoy the game we are going to play this Wednesday against Arsenal at SoFi Stadium in Los Angeles. Both teams are in close contact and we both have the utmost confidence that our game will go on as planned."