Ronaldinho is set to close the door on his AC Milan career after leaving their winter training camp in Dubai, coach Massimiliano Allegri confirmed on Saturday.
The 30-year-old Brazil international is reportedly poised to return to his homeland to re-join formative club Gremio, having fallen out of favour at Milan this season.
"We are waiting for his departure to become official," Allegri told Sky Italia.
"Maybe there was a lack of willingness on his part.
"I was convinced that Ronaldinho could have a great season. He started well, with a balanced side, but then everyone has to take their own responsibility."
Ronaldinho joined Milan from Barcelona in 2008 but despite occasional flurries of his best form he lost his place in the starting XI after Milan signed Zlatan Ibrahimovic and Robinho last summer.