Ronaldo is urging his Corinthians to raid AS Roma for Adriano.
Adriano has struggled for minutes since joining Roma in the summer and is being linked with a return home to Brazil.
Former Inter and AC Milan star Ronaldo said: "He would be the face of Corinthians.
"He is a great striker, a goalscorer, a warrior. I am sure that he would be ideal for the Corinthians."