Barcelona midfielder Alex Song has been ruled out of Cameroon 's friendly with Tanzania on Wednesday with a knee injury.
The 25-year-old former Arsenal player had been due to take part in the game in Dar es Salaam but he will now not travel.
"Song has felt a twinge in his left knee and as a precaution, he will not be travelling with the Cameroon squad," said a statement on Barca's website, fcbarcelona.com.