Tottenham boss: Lennon will soon find his form
England winger Lennon has failed to hit the heights since returning from almost four months out with a groin injury back in April, enduring a miserable World Cup and a poor start to the current season.
The 23-year-old has found himself substituted in most of his club's games this term, while he has also been frozen out by national team boss Fabio Capello.
"He's had the injury and he had a quiet World Cup, really," Redknapp said.
"I think he's getting over the injury from last season. But he's a matchwinner on his day and it's very hard to be consistent when you play out in that wide position, when you've got to beat people every week and people expect you to get the ball and go whizzing past full-backs, cross balls.
"Full-backs now are as quick as wingers, they get tight, they stop you getting the ball.
"You've got to work very hard to get on the ball now when you play in that wide position.
"It's not always easy but he'll come good."
Fellow midfielder Tom Huddlestone believes Lennon is suffering from being double-marked by opponents this season.
"I think a lot of teams know his qualities," said Huddlestone, who could captain Spurs.
"At the West Ham game at the weekend, he had a left-back against him and (Luis) Boa Morte - even though he played left-wing - didn't really get forward that much.
"It was sort of a doubling act on Aaron.
"Anybody with two players on them is going to find it difficult."