"He's exciting," Redknapp told Tottenham's website. "He picks the ball up, gets at people and takes the game to them. He carries the game forward.
"I think his confidence is coming back and he's a real handful. He's so quick. He can go inside or out and his pace is electric. He's so difficult to play against.
"I've coached (Theo) Walcott and he's a fantastic talent, so is Lennon.
"He's only a kid. He went to World Cup in 2006 and there's not a lot stopping him, there aren't that many exciting wingers around who can do what he can do."