The 30-year-old striker, who has been struggling with the problem, was substituted shortly after Keith Fahey's winning goal at the Yerevan Republican Stadium last night.

However, manager Giovanni Trapattoni revealed today that he took him off simply as a precaution.

He said: "I gave him a little bit of a rest because he had, not an injury, but some pain and I wanted to be cautious about it."

Meanwhile, Ipswich defender Darren O'Dea was expected to resume training today after recovering from a sprained knee, while Hull counterpart Paul McShane has rejoined the squad after missing the Armenia game with a hamstring problem.

However, Fulham winger Damien Duff remains sidelined by a calf strain.