The first leg of the Champions League quarter-final is in Amsterdam on Wednesday.
Ronaldo took part in some of this morning’s training session with the rest of the squad, suggesting he’ll be ready to start or at least feature off the bench.
He has been out with a muscular problem since international duty with Portugal, but worked intensively with physiotherapists.
Emre Can, however, is a major doubt after he limped off during last night’s 2-1 win over Milan with a sprained right ankle.
More tests will be required over the next few days, but the mood is not optimistic.
Sami Khedira made his comeback against Milan a month after heart surgery, with Paulo Dybala, Mario Mandzukic, Leonardo Spinazzola and Mattia De Sciglio also returning.
Douglas Costa is expected to be in the squad for the trip to Amsterdam, but not start, as he has been out of action for several months.