Ronaldo has been constantly linked with a move away from Old Trafford in recent years.
Claim after counterclaim has come, but Real Madrid have thus far been unable to prise him away after two summers of trying.
A third summer battle has already begun, but now another interested party could emerge in the shape of Milan.
And if Kaka's proposed world record move to Real goes through - they would be well equipped to match any offer the Spanish giants may make to United.
Berlusconi was talking to his own Mediaset organisation and revealed he could be ready to battle for Ronaldo.
"I told Cristiano Ronaldo that I would like to see him as a Rossonero," he said.
"He looked at me, and said 'Who doesn't like Milan? All players would like to come to Milan'."