Ronaldo has been out with an ankle injury that he suffered in the 3-0 win over Marseille in the Champions League at the end of September.
The 24-year-old could even be fit for the clash with Santander on Saturday.
“The most important thing for me is to return when I am at 100 per cent,” he told AS.
“Let’s see what happens but around the middle of this week I am confident I will already be working with my team-mates.
“This week I will have another test to see if I am fit but the recovery is well on track.”
