OJ Simpson will agree to a paternity test to see if Khloe Kardashian is his daughter - but only if she goes to see him in person.

Daily Mail Online has learned that Simpson wants Khloe to ‘show him a little respect’ and make a personal appearance at Lovelock Correctional Center in Nevada.

He will agree to have a swab to his mouth which will provide the DNA sample needed to clear up the paternity mystery over the reality star.

Jeffrey Felix, a former Lovelock prison guard who wrote a book about Simpson, claims that the jail authorities have even given their permission for the test to go ahead.

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Family resemblance: OJ Simpson has agreed to do a paternity test for Khloe but he wants her to ‘show him a little respect’ and make a personal appearance at Lovelock Correctional Center in Nevada He will agree to have a swab to his mouth which will provide the DNA sample

Who's herdaddy? Now blonde Khloe spoke to OJ Simpson on a prison pay phone and asked him to take a paternity test because of claims that he might be her biological father

OJ, pictured left in 2013 in a prison mugshot, and right in his most recent prison picture

He says that because the procedure was so simple they would have no problem letting Simpson find out.

The question of Khloe’s paternity surfaced again last week in a documentary about her father Robert Kardashian called: ‘The Man Who Saved OJ Simpson’, which aired on Reelz.

Kardashian died in 2003 of esophageal cancer.

Khloe, 31, was the third of the four children born to Kardashian and Kris Jenner but there has been speculation that she was adopted for years.

In the documentary Felix said that Khloe begged Simpson to do a paternity test to finally clear it up and now, speaking to Daily Mail Online, he revealed the disgraced football star’s conditions.

He said: ‘She has to go there and talk to him. He wants her to come out to Lovelock and visit him in person.

‘OJ will do it and the prison officials have told him they will allow it.

‘It’s just a quick mouth swab and they would allow it to happen during a visit’.

Felix, whose book is called ‘Guarding The Juice’, added that Simpson wants Khloe to come in person to ‘show him a little respect’.

He said: ‘He wants to talk to her about some other things too, but more importantly like her he wants to know if she is his daughter’.

The question of Khloe’s paternity surfaced again last week in a documentary about her father Robert Kardashian called: ‘The Man Who Saved OJ Simpson’

So happy together: Khloe Kardashian posted this picture of her with her father as a child to mark what would have been his birthday in February this year

Simpson was infamously acquitted for the murder of his ex-wife Nicole Brown and her friend Ron Goldman in 1995 in what was dubbed the ‘Trial of the Century’.

Afterwards Simpson's life remained unstable and in 2008 he was sentenced to up to 33 years in prison for armed robbery for attempting to steal sports memorabilia he claimed was his.

He was sent to the Lovelock where he met Felix, who had been working there as a corrections officers since 1995 and would remain there until he retired last year.

Questions about Khloe’s paternity began in 2009 when she talked about possibly being adopted during an episode of Keeping Up With The Kardashians.

In her memoir released two years later her mother admitted that she had been unfaithful during her marriage to Kardashin, though she did not say with whom.

Following his split from Jenner, Kardashian, who died of cancer in 2003 married twice more and both his second and third wife claimed that Khloe was another man’s child.

His second wife, Jan Ashley, has claimed that Kardashian thought that Simpson was Khloe’s father and once said: ‘Oh my God, he’s so black, he has curly hair, so does Khloe. Do you think it’s him?’

Such comments have drawn a sharp rebuke from Khloe who has written angry Tweets about the speculation.

In 2012 she said: The audacity you have to mention my father's name like this! Should be ashamed of urself! I let a lot of things slide but this one is really low… YOU ARE DISGUSTING! (yes you know who YOU are)’.

Friends: Kris Jenner was photographed with OJ Simpson after her divorce from Rob Kardashian and his split from Nicole Brown. They were out with his girlfriend Paula Barbieri and Bruce Jenner joined them

Meet the Klan: Kris Jenner and Robert Kardashian when they were married with, from left, Rob in his father's arms, Kim and Kourtney at the front and Khloe, top right

Recently she hit out at her father’s second and third wives and said that their comments about her paternity were ‘overwhelming’.

She said: ‘I was like: 'Listen, you can talk about me and my sisters all you f****** want, [but] do not talk about my dad.

‘He's not here!’

Adding to the intrigue, legal documents have also surfaced in which Kardashian described Khloe as his 'biological daughter'.

He filed the declaration when he was trying to get his marriage annulled to Jan Ashley saying he didn't want to have any children with her.

In the declaration he said: ‘I decided that since I already had four biological children, I did not wish to have any more’.

Questions about her paternity first began to swirl in 2009, when she discussed in the course of an episode of Keeping Up With The Kardashians whether she may have been adopted.

In 2011, Kris Jenner admitted in her memoir that she had been unfaithful during her marriage to Robert, but did not say she had had an affair with Simpson.

Then in 2012, his third - and final - wife Ellen Pierson surfaced to make fresh claims.

Pierson, who married Robert six weeks before his death from cancer in 2003, claimed that her deceased husband had admitted to her that Khloe was another man's child.

She was backed up by his second wife, Jan Ashley.

Ahsley - who married Robert following his divorce from Kris - told Star magazine: 'Khloe is not his kid — he told me that after we got married.

'He just kind of looked at me and said [it] like it was a matter of fact. He said, "Well, you know that Khloe's not really a Kardashian, don't you?"'

Kris Jenner reacted angrily. Jenner appeared on Good Morning America and said: 'It just gets weirder and weirder: I have never heard such c**p in my life.

'I mean, I was there! I gave birth, I know who the dad was'

She went on: 'Everything’s good. We’re all good - don’t worry about it,' before adding that Khloe's lighter hair in comparison to her sisters has been a long-running 'family joke' regarding her paternity.

Legal documents also surfaced in which Robert Kardashian described Khloe as his 'biological daughter'.

He filed the declaration when he was trying to get his marriage annulled to Jan Ashley saying he didn't want to have any children with her.

In the declaration, Robert says, 'I decided that since I already had four biological children, I did not wish to have any more.'

Then this year Khloe addressed the topic again.

'I think the thing that most became overwhelming was when, like, the stuff happened with one of my dad's wives,' Khloe said in a clip from her talk show.

'She wanted to come out, like, 10 years later after my dad passed away and said that I'm not his daughter and that he confided in her and blah-say-blah.'

'I was like, "Listen, you can talk about me and my sisters all you f***ing want," she said, '"Do not talk about my dad … He's not here!"'

Meanwhile, Khloe paid tribute in February to her father on what would have been his 72nd birthday.

The reality star shared a snap of her as a child with her father to Instagram with the caption: 'To the best man I've ever known, happy birthday daddy.'

'I miss you! I miss you! I miss you! Man... I wish we had more pictures together.'

Robert Kardashian and Kris Jenner's marriage ended over her affair with Bruce Jenner, the Olympic gold-medal winner who is now Caitlyn Jenner.

He and OJ Simpson had been close friends since the early 1970s, while Kris had been a close friend of Nicole Brown, Simpson's wife, since before her marriage.

By the time Nicole was murdered, the Kardashians' marriage was long over. But the OJ Simpson trial divided him and his ex-wife, with the two on opposing sides.

a family matter, it's none of the public's business."'