Manchester United boss David Moyes has quickly cracked the whip.
The players have already witnessed his first flash of temper.
"It happened in training. I told the players to get their finger out and give a bit more,' said Moyes. 'I had no qualms about that. Top players don't have a problem with it. But don't call it 'The Hairdryer' - someone else has already copyrighted that!
"Training has been incredibly competitive. Fierce. The noticeable aspect for me is that they are comfortable as winners. I have been wowed by Ryan Giggs's technical ability. Of course I knew how good a player he was, but at close quarters and seeing how good he is with the ball is something I'm now privy to," Moyes told the Mail on Sunday.