The Colombian Football Federation (FCF) issued a statement in the early hours of Sunday giving an update on Rodriguez.
"James Rodríguez underwent a scan today which showed that he is suffering from minor edema (swelling caused by an accumulation of fluid) in his right leg, but that there has been no muscle tear," the FCF said.
Rodriguez, who was substituted in the final group game against Senegal, did not take part in training on Saturday and the Federation gave no indication of whether he would be fit to face Gareth Southgate's side in Moscow.
Colombia striker Miguel Borja also missed the practice session after he felt discomfort in his knee during Friday's training.
(Reporting by Simon Evans, editing by Ed Osmond)
