The new national team boss has already laid down the ground rules ahead of his first game against Czech Republic tomorrow night by slapping a booze ban on his squad while they are on international duty.

Levein may have paved the way for Barry Ferguson and Allan McGregor to make a return to the national team fold, albeit Ferguson is still considering his Scotland future and McGregor misses out this time through injury.

But he has made it clear he will not tolerate another lengthy drinking session like the one that dominated the headlines last May - an approach which has been welcomed by Fletcher.

"The manager expects us to be professional while we are here and for there to be no booze and the players have to follow that," he said.

"The rules are in place now so people know if they disobey them, there will be consequences."

In fact, the midfielder revealed he did not even indulge in any celebrations before joining up with the rest of the squad after Manchester United triumphed in the Carling Cup final on Sunday.

"There was no after-party," said Fletcher.

"We all dispersed to go with our national teams and that's part of the job. We've got a job to do for our countries now.

"There were small celebrations in the changing room and then off to represent our countries so there weren't too many big parties."

As well as Ferguson and McGregor, Levein has also opened the door for the return of Kris Boyd and Lee McCulloch after the Rangers pair had both quit international football.

Boyd refused to be considered for selection under previous boss George Burley, while McCulloch retired to focus on his club career.

Both are in the squad for tomorrow's clash at Hampden, albeit McCulloch is set to miss out through injury.

And, although he knows the return of Boyd in particular will provoke a mixed reaction from the Tartan Army, Fletcher believes the squad has already benefited from having them back in the group.

He said: "We've got Boydy back in the squad and he is a big character and adds to the atmosphere.

"Lee McCulloch too. They are lively around the place and give everyone a lift.

"It's good to have them back because we know deep down they are good guys and everyone welcomes them back.

"There is always a good spirit about the squad and a good camaraderie when all the lads come together, even from both sides of the Old Firm.

"That will be important and will help take us forward."

He added: "It's a new manager and a new start. We need to just learn from what's happened in the past and write it off.

"The best way to do that is learn from it and take it forward now and try to achieve what everyone wants, and that's to to qualify for a major competition for Scotland."