The Portuguese Football Federation (FPF) confirmed Cristiano Ronaldo missed training on Thursday due to an infected toe.
Ronaldo is in Portugal as the national team begin the defense of their UEFA Nations League title at home to Croatia on Saturday in Porto.
But the 35-year-old’s participation in the upcoming game has been thrown into doubt after missing training on Thursday. Therefore, Portugal face an anxious wait for further updates on Friday.
The FPF released a statement explaining Ronaldo’s absence was down to an infection on his right toe. He spent Wednesday doing gym work and is now undergoing antibiotic treatment.
No further details were released on Cristiano’s toe problem, but the FPF plan to closely monitor his condition on a regular basis.
Renato Sanches, meanwhile, has suffered muscular problems of late at Lille and will leave the Portugal team camp after medics reviewed his condition.
Portugal are in Group A3 for the Nations League alongside France, Sweden, and Croatia. In such a tricky group, a good start is necessary with only one qualification spot for the knockouts available.
The game against Croatia begins at 20:45 (CET) on Saturday with Sweden coming up next Tuesday afterwards.