Dunga feels he will get the best out of the £32.5m British transfer record now the chains are off.
Dunga said: "We are witnessing the result of our work and are happy with it. This team is prepared to undertake any task.
"Robinho has played in various positions. He asked me 'What is my function?' I told him 'Do you feel constrained in your place? Tell me where you'd like to play'.
"He said 'No, I just want to be on the pitch and contribute'. Quick-thinking and talented players can adapt to any position.
"We are happy to have players with this mental attitude."