Manchester United striker Marcus Rashford will develop physically and become an even better player, according to the club's under 21-manager Warren Joyce.
After making his first-team debut in February, Rashford, 18, has enjoyed a remarkable rise to prominence and was this week named in the provisional 26-man England squad ahead of Euro 2016.
Joyce, who played a key role in developing Rashford, said the youngster has the potential to make great improvements as he gets older.
Joyce told the Manchester Evening News: "It doesn't surprise us about Marcus. I can remember him playing cage football here as a 10-year-old kid and he was playing with Paul Pogba, Josh King, Tyler Blackett, Will Keane when he was just a little dot.
"There is still a lot more to come from Marcus. Physically he is going to be a big lad. You don't realise how much of a good footballer he is. There are a lot of facets to his game. He is not just a goal scorer."
Joyce said United gave Rashford, who has scored eight goals in 17 games for the first team, experience of playing in both his own age group and an older age group to assist his development.
Joyce said: "You get it a little bit easier scoring goals in the under-18s, so there was a plan from this time last year for him that we talked about. We gave him exposure training against under-21 defender Donald Love which is really hard.
"Then you are playing against under-18s on a Saturday morning where it is a bit easier, where you can try a few things out."
United's U18 coach, Paul McGuinness, has warned Rashford he must not get carried away despite his successes.
"Marcus is not the finished article," McGuinness told Press Association Sport. "He is still attracted to the ball and Louis van Gaal is right, he is still moving outside the line of the posts down the side of the pitch.
"He also needs a bit of luck in avoiding injury, but he has given himself a good foundation. It is up to him to build on that.
"I hope he does. Let's face it, there are not many top goal scorers in English football."
McGuiness said Rashford had not intended to be an out-and-out striker earlier in his career.
"He wasn't goal obsessed," McGuinness said. "He would play up front but he was always wanting to be the clever No. 10.
"Someone with that much ability and speed is wasted doing that. It happened with Cristiano Ronaldo. When he first came he was all tricks and stepovers and show, then he started to realise goals got you all the attention, and he changed didn't he? He saw what could happen if he changed to a striker's mentality."