Manchester City's first-team coach Eddie Niedzwiecki has warned any slackers will quickly be shown the door.
"The best players are the ones who challenge themselves," he told the Manchester Evening News. "You have to be a really hungry fighter and want to get better.
"I was lucky enough to be part of the back-room staff at Arsenal when they went a season unbeaten and I saw the way those players challenged each other to keep going and what they demanded of each other.
"That is the sort of thing we want our players to do here, but it doesn't happen overnight. It is something you have to strive to achieve. A culture that has to be instilled.
"I have worked with Thierry Henry at Arsenal and Ryan Giggs with Wales and they would be two of the best examples of star players who just spent every day working the correct way and trying to get even better.
"I watched Gianluca Vialli spend hour after hour on his own doing shooting practice after training, I saw Gianfranco Zola spend half an hour a day after we had finished work perfecting his free kicks.
"At Arsenal players like Martin Keown would physically intimidate their own team-mates to replicate the situations they would face in a game.
"If a player comes in here with the wrong mentality then they will fall by the wayside. It is our job to either remove them or change them.
"We know that certain players can do better. We know we can do better because we are always questioning ourselves and you have to be honest and open.
"It is important that anyone who comes to City in the future to play is hungry to still do well. We want players to be more interested in the rewards of winning trophies than the cash that might be on offer."