Fulham chairman Mohamed al Fayed has launched a stinging attack on Manchester United boss Sir Alex Ferguson.
Ferguson is keen to sign Fulham striker Louis Saha, but Fayed has told him the Frenchman is going nowhere.
"I am fed up with Sir Alex Ferguson trying to disrupt my club and constantly try to unsettle my players," said al Fayed.
"I have a clear message to Sir Alex and anyone else who is interested: 'Read my lips, Saha is not for sale'."
United were reported to have made an offer in the region of £8m for the 25-year-old before Christmas, but Cottagers boss Chris Coleman issued a 'hands off' warning at the time.
And since the speculation about Saha's future has refused to die down since the transfer window re-opened, al Fayed has moved quickly to quash recent rumours that he may be on his way to Old Trafford.
"Ever since Fulham beat Manchester United at Old Trafford so convincingly Ferguson has been showing signs of increasing desperation," added al Fayed.
"Obviously he needs a top quality striker urgently but he can't have mine."
It is the second time in 24 hours that Ferguson's methods have been criticised.
PSV Eindhoven chairman Harry van Raaij condemned the United boss for inviting prospective transfer target Arjen Robben to United's Carrington training ground last week without their permission.