Manchester United boss Sir Alex Ferguson is furious with Wayne Rooney's larking about.
The Sun says Rooney was pictured smoking, urinating in the street and singing after a night out that went on until 5.30 on Sunday morning in Manchester.
Ferguson will be furious at the reports and pictures as the manager demands players give the best image possible of the club at all times.
Rooney, 24, could be fined with the issue set to hit board level as the club tries to attract sponsors from around the world to fight the club's debts.
Ferguson will also demand to see the fitness reports on Rooney, who reported back to training last week, to see if he has kept his weight down during a month off.
