The Portugal international has been linked with a return to Manchester United as well as a switch to Paris Saint-Germain this summer, and has admitted to missing playing English football in the recent past.
It was reported that Ronaldo had tied down his future at the Bernabeu until 2018 after being offered an improved salary, but he is adamant that an agreement is far from being reached.
"The situation still hasn't been resolved and I don't think now is the right time to talk about it," Ronaldo told AS.
"Perhaps we'll be able to give more concrete news about this further down the line but now the only thing in my remit is to train and work."
Ronaldo has two years left on his current deal at Madrid.