Everton and Belgium midfielder Marouane Fellaini will be out of action for three weeks with a knee injury.
The 24-year-old picked up a knock in Saturday's Premier League clash against Wigan, but still met up with his Belgian team-mates ahead of the matches against Serbia and Scotland.
A statement on the Belgian FA's website read: "Fellaini suffered a small tear at the juncture of muscle and tendon in the knee. The injury was revealed during a scan.
"Fellaini was injured last Saturday during the match between his club Everton and Wigan Athletic. He will be out three weeks.
"It has been agreed with his club Everton FC he will rehabilitate in Belgium during this period."
However, Everton later released a statement to insist that their midfield colossus will return to Merseyside to have the injury assessed before any further action is taken.
The club statement read: "Marouane Fellaini is returning to Everton for further assessment of his knee injury.
"Fellaini picked up a knock during the 2-2 draw with Wigan Athletic last weekend and although he managed to complete the game, the significance of his injury only became apparent 48 hours later.
"He was withdrawn from the World Cup qualifiers against Serbia and Scotland and had the injury scanned in Belgium.
"The Blues medical team have reviewed his scans and will assess him fully when he returns to Finch Farm on Monday."