The Portuguese superstar is under contract at Santiago Bernabeu until 2015, but doubts have been cast as to his chances of seeing out that agreement.
Former employers Manchester United are said to be keen on taking the prolific forward back to Old Trafford, with a summer approach mooted.
Meanwhile, reports in Spain suggest Real are planning to hold discussions with Ronaldo regarding a possible extension to his current deal.
Ronaldo is aware of the incessant rumours, but claims to be paying little attention to them.
Speaking after Real's UEFA Champions League semi-final exit at the hands of Borussia Dortmund on Tuesday, the 28-year-old said: "I have two more years on my contract, I am not concerned about that.
"I want to win wherever I am. That is what I want most, I am not concerned about renewing."
Ronaldo also has no desire to discuss the future of Real coach Jose Mourinho, who continues to hint at a summer return to England.
He added: "I do not know. Sincerely, I do not know.
"I do not have to talk about other people, I am just concerned about the team and myself and that is all. The future of other players, or other coaches, does not concern me."