A security firm has launched an enquiry after the Manchester United team bus left without two stars yesterday, reports the Manchester Evening News.
Both Danny Welbeck and Chris Smalling exited Manchester United's Carrington training ground only to discover that the coach had already left for the airport.
Leaving the pair behind would have been a disaster for David Moyes, who faces a tough game against Shakhtar Donetsk in Ukraine tonight.
A Manchester Evening News source is quoted as saying: "The security firm United employ, CES, are supposed to check the numbers.
"They have a bloke with a clipboard who stands at the front and ticks all the players and staff off a list.
"He said that they were all onboard and they set off down the lane and out past the barrier.
"Danny Welbeck and Chris Smalling then came running out of the main building.
"Apparently Chris had gone pale and asked where the coach was. When he was told it had gone he said 'we were supposed to be on it'.
The security company CES, who are in charge of checking the numbers have now launched an investigation in to how the coach was allowed to leave without the two young English stars.
Luckily, the error was rectified and the team caught their intended flight, including Welbeck and Smalling.
"They managed to get a message to the coach and it came back and picked them up," the source said.
"The other players were laughing their heads off. You couldn't make it up."
Both players are expected to be on the bench for the Champions League group game tonight with Smalling coming in for the injured Rio Ferdinand.