The Magpies have suspended the 26-year-old midfielder until further notice in the wake of his dismissal at Liverpool on Sunday.

However, it is understood it is a furious bust-up between the two men in the dressing at Anfield after the final whistle which is at the root of the punishment.

A statement read: "Newcastle United can confirm that Joey Barton has been suspended from the club until further notice.

"The club will be making no further comment on the matter at this time."

Barton, who has three years remaining on the contract he signed when then Magpies boss Sam Allardyce sealed his £5.8million capture in July 2007 and vowed to reform him, would have missed the final three games of the club's desperate fight for Barclays Premier League survival as a result of his red card anyway.

But even if Shearer does not remain at the helm next season, there is little appetite in the boardroom at St James' Park to hand yet another chance to a serial offender on and off the pitch.

It is likely both he and his £60,000-a-week wage packet will be offloaded during the close-season regardless of which division the club is playing its football and whatever the financial implications of a deal which has proved more trouble than it has been worth.

However, in the wake of the heated exchange which took place at Anfield in front of the rest of the players, defender Habib Beye has insisted Shearer is the man to take the club forward beyond the next three games.

He said: "He has passion. He knows the club better than anyone and I think for everyone, it would be a good boost.

"You know when you have Alan Shearer as the manager, it is easier to attract some other players, because they will believe you have a good manager.

"He said he is here for eight games - I understand that. He is here to keep the club in the Premier League.

"But if we stay in the Premier League and we have the opportunity to build something good, hopefully he will stay - and I think we can still do it with the two home games coming up.

"I believe, if we get out of this situation, next year will be better.

"I really believe Newcastle will become what it was before, because they have been a big club, and you can't believe this club is going into the Championship."

Shearer and assistant Iain Dowie have wasted little time in introducing a strict new regime at the club's Darsley Park training headquarters, and despite claims that has been unpopular with some members of the squad, they are making no apologies for it.

The response to Barton's latest misdemeanour also sends out a message the 38-year-old is in charge, and things will be done his way.

Shearer was furious with Barton's indiscipline at Anfield after he lunged into a senseless tackle on Xabi Alonso to ensure he can play no part in the club's remaining three games against Middlesbrough, Fulham and Aston Villa.

But it is what transpired later that resulted in him being told to stay away from the training ground during what promises to be a tense conclusion to the campaign.

The midfielder's agent, Willie McKay, had earlier dismissed suggestions he could have played his last game for the club, but former players were swift to condemn the actions of a man whose involvement has been limited to just 32 appearances by a series of injuries and, infamously, a jail sentence for common assault and affray.

European Fairs Cup-winning skipper Bob Moncur said: "Ninety-nine per cent of right-thinking fans would say that's the right thing. I wouldn't be at all surprised bearing in mind he is out for the rest of the season.

"Then goodness knows what will happen because so much is up in the air."

Former defender John Anderson added: "Sam Allardyce brought him in because he thought he could control him and change his temperament.

"But when you are like that, you are never going to change. It's just in his nature, it's in his make-up and there's not a great deal you can do about it.

"He kept coming out with statements that he was going to change his ways, but Sunday just proved he hasn't changed at all."

Malcolm Macdonald was even more damning.

He told Setanta Sports News: "With the situation the club is in, I think it is impossible for the crowd to accept this behaviour.

"The guy has continuously brought Newcastle United into disrepute. It really isn't good enough.

"In the short time he has been at Newcastle, he has either been injured, in prison or in trouble. Enough is enough."