Ronaldinho will return to his former club Fluminense in January to take part in the Florida Cup.
The 35-year-old initially joined the Brazilian club in July but left by mutual consent less than three months later.
Ronaldinho, who was twice named Fifa World Player of the Year, is still officially without a club but is now set to face Shakhtar Donetsk and International in the tournament which will be held in January.
“We are going to Orlando for the Florida Cup, and as a matter of marketing and brand expansion, Ronaldinho will play for us,” Fluminense president Peter Siemsen told Radio Tupi.
“Ronaldinho and Fluminense maintain a great respect for each other. And for the American market is very attractive brand of player.”