The Pompey boss told The News earlier in the summer chief scout Ian Broomfield had recommended the Algerian to him.
Belhadj can play at left-back or as a left-sided wing-back.
Redknapp stated he would only be looking to bring the player in on loan and would not be able to stump up a fee for his services.
The Blues manager also underlined the need for an injection of pace down the right flank.
A lack of natural width down that side was again noticeable as Pompey were thumped by Chelsea yesterday.
Redknapp said: 'I'd like to get the Algerian, but don't know if I can.
'It would only be a loan. That's what we're looking for.
'We have a problem on the right, too.
'We need someone with pace. We have no one there like that at the moment.'
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The full article contains 179 words and appears in The News newspaper.