Tottenham boss Harry Redknapp says Aaron Lennon has achieved what he has without any proper coaching.
"He has that pace and skill but I don't think he has really been taught how to receive the ball and get the ball," Redknapp said.
"I spoke to him about getting behind people. When he runs behind, even if the ball doesn't come, full-backs are aware and drop off.
"Lots of players haven't been coached over the years, they play and do what they did as kids and then you step up a level. That's why there aren't that many top wingers, you get marked out of the game."
Lennon has signed a new five-year contract and Redknapp added: "You have to keep your best players to build a team.
"If you start selling your Aaron Lennons then you are back where you were at the start of this season.
"We are in a situation where we are not looking to sell any of our best players this year in the summer."