England manager Gareth Southgate has said he "will not hesitate" to throw Liverpool striker Dominic Solanke, Bournemouth midfielder Lewis Cook and Norwich's on-loan keeper Angus Gunn into action against Brazil.
The young trio have been drafted in for Tuesday's friendly at Wembley and, after handing five players a senior debut in Friday's goalless draw with Germany, Southgate is again open to giving youth a chance.
"It's a very easy squad to settle in to," the England coach told a news conference in London.
"The senior players are very open, very welcoming. Most of the squad are young anyway, so know each other from younger age groups.
"Those [three new] guys have fitted in off the field no problem, which helps them to fit in on the field -- and they're good players, so in training they look fine.
"We have to see how the game progresses, but I won't have any hesitation in putting them on the pitch."
Southgate, who confirmed that Tottenham midfielder Eric Dier will keep the captain's armband, also hopes to help his players learn to deal with the pressure of a penalty shootout ahead of the World Cup.
The boss needs no reminding about England woe in shootouts, having missed the vital penalty in the Euro 96 semifinal defeat to Germany.
England have since won only one of seven shootouts in major competitions and Southgate said: "It's about being able to execute a technique under pressure.
"In the beginning of that run, very few matches went to penalty shootouts -- it was a fairly unique experience, you didn't face it very often with your club.
"After a period of defeats, there is something more to it. I played in a team that won a quarterfinal on penalties.
"We had players who were regular penalty takers who executed their penalties brilliantly in the quarterfinal and semifinal, so clearly it is the guys who aren't used to that situation that then have to have a strategy to dealing with it.
"There's a lot of different areas we can work on with that, we can put players into pressure scenarios, which is good.
"Also, frankly you have to be good enough to get to that stage -- it's not penalties that knocked us out of the last two tournaments.''