Manchester United manager Sir Alex Ferguson has re-opened his war of words with Arsenal boss Arsene Wenger by calling the Frenchman a "disgrace".
Ferguson has slammed Wenger's behaviour after United's 2-0 Premiership win over the Gunners at Old Trafford in October.
He told the Independent: "In the tunnel Wenger was criticising my players, calling them cheats, so I told him to leave them alone and behave himself.
"He ran at me with hands raised saying: 'What do you want to do about it?'"
Ferguson added: "To apologise for the behaviour of the players to another manager is unthinkable. It's a disgrace, but I don't expect Wenger to ever apologise, he's that type of person."
The Scot said David Gill (United chief executive) and David Dein (Arsenal vice-chairman) had agreed at boardroom level not to discuss the incident in public, but Ferguson says Arsenal have reneged on that deal.
"In the ensuing weeks all you got was a diatribe from Arsenal about being kicked off the pitch and all that nonsense. Gill phoned Dein three times to complain but nothing was done," said Ferguson.
"The return is on 1 February and they will come out with another diatribe. David Gill and I feel we should set the record straight because Arsenal have not written to us to apologise and we would not let that happen here."
Ferguson admits that Ruud van Nistelrooy's tackle on Ashley Cole that earned the Dutchman a ban "could have given him a serious injury" but he believes Arsenal were the main aggressors.
"Wenger is always complaining the match was not played in the right spirit," he added.
"They are the worst losers of all time, they don't know how to lose. Maybe it is just Manchester United, they don't lose many games to other teams.
"We tend to forget the worst disciplinary record of all time was Arsenal's up until last season. In fairness it has improved and now they are seen as paragons of virtue.
"But to Wenger it never happens, it is all some dream or nightmare."