Ronaldo has been heavily linked with a move to Real Madrid in recent weeks although United are determined to hold on to their prize asset and have even threatened to report the Spanish champions to FIFA over what they claim are attempts to unsettle him.
The 23-year-old is hoping an announcement will end the speculation.
Speaking after Portugal's 2-0 win over Georgia, Ronaldo told A Bola: "Let's see, I hope there will be news soon. In two to three days I will announce my decision."