Borussia Dortmund coach Lucien Favre lauded Jadon Sancho and believes the teenage attacker can get even better.
Sancho has starred for the Bundesliga leaders this season, scoring five goals and assisting eight in 14 games in all competitions.
The 18-year-old's impressive displays have already led to an England debut and reports Paris Saint-Germain are interested in his services.
Favre was full of praise for Sancho, saying his achievements at such a young age were incredible.
"Of course he has a lot of potential. He's only 18, and he's already playing with the England national team," he said.
"At the age of 18, that's something special, you don't see it very often.
"Of course he can still improve a lot, that's quite normal and he knows that. But he's already very good."
Favre added: "He knows that he still has to improve. He just has to keep working hard, keep working calmly, and needs to have a lot of fun."
Sancho recently said that he is enjoying his time with Dortmund, a club that is allowing him playing time and the ability to flourish while Dortmund sporting director Michael Zorc added that he expects the winger to remain for "quite some time".
Dortmund, who hold a two-point lead atop the Bundesliga, visit Wolfsburg on Saturday.