Spurs have not won without King this season.
Redknapp said: “Ledley has a left knee problem.
“He can’t have any more operations as there is no cartilage left — it’s bone on bone.
“But if you get 20 games a year out of him, it’s the 20 games you’ve got a better chance of winning than the 20 when he’s out.
“He is so important. And he’s a great lad. He deserves to be looked after.”
