The Spanish giants are said to be willing to stump up £105m for the Tottenham Hotspur winger, who is believed to be keen on moving to Spain.
"I have my opinion about Bale, but I will not go public with it," Goal.com quotes Ronaldo as saying.
"These kind of issues are not my responsibility. I do not talk about new signings or player issues."
When speaking about his own future, Ronaldo, who is believed to be a target for his former club Manchester United, stated that his situation is yet to be "resolved".