Former Manchester United hard man Roy Keane believes the Carlos Tevez affair highlights that modern players are soft and lack the fierce, no-mercy approach of his own career.
Tevez attracted widespread criticism when Manchester City boss Roberto Mancini alleged the Argentinian refused to play as a substitute during the Champions League defeat by Bayern Munich.
"I think Tevez has probably disappointed both sets of supporters. That is the way the modern game is going now - he has had his bit of punishment," said Keane ahead of Sunday's mouth-watering Manchester derby.
"I can't imagine he is going to be involved on Sunday now but if he is I am sure he is going to get a hot reception from both sets of supporters. He will have to deal with that."
Keane told the BBC that too many players in the modern game have too much power and fear hard work on the pitch.
"There are certainly not as many characters around in the game, the type of players (who) properly roll their sleeves up and get stuck in," Keane told the BBC.
"Every player seems to have a bit of a fit when he is taken off or not brought on.
"A lot of them are going soft so it is very difficult for the managers - everyone seems to be commenting on what a manager should do with a player.
"But it's very difficult, the player is in a very strong position with contracts, the PFA (Professional Footballers' Association). A lot of them seem to be hard work. I don't mind players getting a little bit upset but you can show it in the right way.
"The best way to do that is to go out and perform and show the manager he was wrong in the right way.
"That is by scoring and when you do, celebrate with your team-mates - you don't make signals to the bench or start doing all that on the back of their jerseys as if they need to remind us of who they are. That does frustrate me."