Townsend has been called up by Roy Hodgson for the upcoming World Cup qualifiers with Montenegro and Poland, and Redknapp has compared the Tottenham Hotspur winger to Bayern Munich player Arjen Robben.
The former Spurs boss told London24: "If you look at Arjen Robben, Andros Townsend is the closest thing that we have produced to him.
"I'm not saying that he is Robben yet, he is not, but he is very similar. He plays on the right, dribbles well, runs at people, gets shots at goal. I think he could be fantastic on that big pitch at Wembley, a real threat.
"It wouldn't bother him in the slightest. He is a very focused and determined lad who wants to do well."
The 22-year-old featured 12 times for QPR last season during a loan spell from White Hart Lane.