The England under-21 striker is well down the pecking order at White Hart Lane, and the Queens Park Rangers boss wants to bring him in on a temporary basis.
Redknapp confirmed he tried to sign Kane before the deadline passed but the collapse of Andy Johnson's move to Crystal Palace scuppered the deal.
But he's revealed that he's still keen to sign Kane.
"I was going to take Harry on the deadline," Redknapp told the Daily Mirror.
"I was going to take him that night when AJ looked like he was going to Palace. Now, I don't know. Harry's probably the third choice at Spurs now.
"Whether they'll still loan him, I don't know. They might do. Andy Johnson missed all of last season - is he going to stay fit?
Bobby Zamora's had problems too. That is the only area. Everywhere else I'm very happy with."
Tottenham already have two players on loan at Loftus Road - Tom Carroll and Benoit Assou-Ekotto joined QPR before the summer deadline passed.
Tottenham's current first-choice strikers are Roberto Soldado and Jermain Defoe, while Emmanuel Adebayor is due back in training this week after a leave of absence.