Jose Mourinho thinks young players in the game are now brats
Jose Mourinho has been involved in management since 1994 when he was assistant to Sir Bobby Robson at Porto.
Since then he has gone on to manage at a string of Europe's elite clubs including Inter Milan, Real Madrid, Chelsea and now Manchester United.
And the 54-year-old has admitted one of the biggest changes he has noticed in his managerial career is the way young players have become "brats".
Jose Mourinho thinks young players are now boys not men
"I had to adapt to a new world. To what young players are now," Mourinho told magazine France Football.
"I had to understand the difference between working with a boy like Frank Lampard, who, at the age of 23 was already a man, who thought football, work, professionalism, and the new boys who at the age of 23 are kids.
"Today I call them boys not men because I think they are brats.
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"Everything that surrounds them does not help them in their life nor in my work.
"I had to adjust to all that. 10 years ago, no player had a mobile phone in the dressing room. That is no longer the case.
"But you have to go with it, because if you fight that, you are bringing about conflict and you put yourself in the stone age."