Ronaldinho's brother and agent has claimed that the Flamengo forward is losing his patience over unpaid wages.
The 31-year-old, who moved to the Brazilian club from AC Milan in January, has not been paid for four months.
"Flamengo have to settle this with Traffic," Roberto de Assis told Marca Brazil.
"Ronaldinho has not received his wages for four months and is still on the pitch, trying hard, but struggling.
"We are waiting, but patience has its limits. We're running out of patience with the whole situation."
De Assis went on to cool speculation that the Brazil international could seek a move to Greece.
"This is all speculation, hype, blah, blah, blah," he added. "Nobody knows anything. He has a contract, that's all I can say."
Ronaldinho has won the FIFA Player of the Year award twice during his career.