Manchester United have major fitness concerns over Romelu Lukaku.

The Daily Mail says Lukaku had to miss Belgium training in order to have an MRI scan on his foot.

The powerful forward has joined up with his nation for the international break, though had to miss out on Monday's practice session.

Belgium later confirmed to fans that Lukaku 'had an MRI scan of his foot' and that results were being waited upon.

The news will come as a concern to Ole Gunnar Solskajer and the United hierarchy at Old Trafford.