Sergio Romero says it is the responsibility of Manchester United's veterans to help their young teammates.
A number of youngsters have broken through under Ole Gunnar Solskjaer.
And Romero believes it is important for there to be role models in the dressing room.
"That's the big difference in how clubs are going about things these days," he said. "They are looking at the youth categories much more and bringing youngsters through who have great ability."
"What I always say is that we older and more experienced players have to help these younger players to understand how they have to play, and how it's a sport in which you have to make big sacrifices. Football nowadays has changed an awful lot. It's not like when I was 18 and had just moved up to the first-team squad and I was just told firstly to establish myself and not let an opportunity slip away.
"Today the game has changed, and I think that we are trying to make sure that our young players are aware of this. They go out and play in a match, but they have to fight as if their lives depended on it while out there on the pitch. For us it's not just about playing the match, finishing it and then all going home. It's exactly the opposite. It's all about going out and showing what we've been working on in training all week and trying to make an impression on the game."
