Ousmane Dembele missed Barcelona teammate Sergio Aguero's retirement media conference on Wednesday.
Sport says the Frenchman, who did not feature against Boca Juniors in Saudi Arabia, was also not present at the squad's visit to the Espai Barça exhibition.
Some have suggested that he could be hurt after he seemed to have pain against Osasuna and was taken off.
However he did travel to face Boca in Riyadh.
Dembele comes off contract at Barca in June with talks over a new deal at a standstill.