Ghana midfielder Anthony Annan did not train with the Black Stars on Friday afternoon after suffering an ankle injury.
The Spain-based player was taken off during Thursday's 3-0 African Cup of Nations warm up win over Egypt in Abu Dhabi.
The midfielder fell awkwardly when he went for a challenge in the first half of the match at the Zayed Sports Complex.
Some pains still persist in the ankle which prompted team doctors to exclude him from training to enable him undergo treatment.
He will be monitored over the next few hours before a decision is taken whether he requires further tests.
The Black Stars are training in Abu Dhabi ahead of their participation in the 2013 Africa Cup of Nations in South Africa.