Marouane Fellaini has handed Belgium an injury scare just two days before their Euro 2016 qualifier against Wales in Cardiff.
It is understood the Manchester United forward suffered a groin injury as the Belgium squad trained at Anderlecht's Constant Vanden Stock Stadium.
Marc Wilmots' squad will leave their Brussels base on Wednesday evening and it is unclear whether Fellaini will be on the flight to Cardiff.
Press Association Sport understands that the Belgian Football Association's medical staff are currently investigating the extent of the injury to determine whether Fellaini can play at the Cardiff City Stadium on Friday night.
Belgium, who are second in the FIFA world rankings, have plenty of depth to their squad but the loss of Fellaini would still come as a huge blow to the Red Devils.
The powerful 27-year-old has scored eight goals in his last 13 games for club and country and was on target twice in Belgium's 4-3 friendly victory against France in Paris on Sunday night.
Belgium lead the way in Group B at the halfway stage of the Euro 2016 qualifying campaign but only on goal difference with Wales in second place.