The French forward scored the opening goal in Saturday 's 3 - 1 win at Sunderland in the Premier League .
Manager Arsene Wenger has revealed his countryman is an injury concern for the trip to the Stade Velodrome .
The French forward scored the opening goal in Saturday 's 3 - 1 win at Sunderland in the Premier League , but manager Arsene Wenger has revealed his countryman is an injury concern for the trip to the Stade Velodrome .