Kaka sat out Monday's training with the Brazil national team due to a muscle strain ahead of their upcoming friendly against the United States (Tuesday, 8 pm ET; ESPN2), according to a report.
The Orlando City midfielder worked with the team's physiotherapist at the hotel, although a Brazil federation official told MLSSoccer.com that the injury would not prevent Kaka from playing on Tuesday.
Brazil is using the match as a tuneup for CONMEBOL World Cup qualifiers, which begin next month against Chile and Venezuela. Kaka has said he would like to be part of the Selecao as they prepare for the 2018 World Cup.
Brazil head coach Dunga has said that he values Kaka's experience as the team heads into its first World Cup qualifying tournament since 2010.
"Kaka can help a lot inside and outside of the field. When I talk about his excellent athletic condition, people don't realize we're also paying attention to his technical abilities," Dunga said during a news conference on Monday at Gillette Stadium. "He's shown an excellent level with his club, and he understands he can no longer be the protagonist for 90 minutes, but he can definitely make a difference in very complicated games."
Kaka entered the game in the second half for Brazil's 1-0 victory on Friday against Costa Rica at Red Bull Arena.