England U21 coach Gareth Southgate has warned against fast-tracking his youngsters.
Southgate believes England must be wary of promoting people too quickly.
"Of course, anyone could (make the World Cup squad)," said Southgate, whose charges host Finland on Thursday and then San Marino next Tuesday in a pair of Euro 2015 qualifiers.
"Myself and Roy (Hodgson) have had discussions about it, but we are talking about our squad predominantly being very inexperienced players.
"Some of the guys being talked about have played half a dozen to a dozen Premier League games.
"To elevate them into the senior squad you have to be pretty sure they will get a game - and, secondly, you can't just dismiss experienced players who got us to the finals.
"It would be a harsh manager who said, 'Thanks for all your help, but I'm not taking you to one of the biggest festivals of all time in Brazil.' "I don't see the rush with our younger ones. They have ability, but not the experience, and there is a long way to go for them.
"If they get in, brilliant, that is what they want, but we wouldn't want it to be that they are in for six months and then it affects their long-term progression."
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