Muhammad Ali 'is a victim of elderly abuse and his wife is only concerned with his money' claims the boxing legend's brother

Muhammad Ali's brother claims that the 71-year-old boxing legend (left) is being gravely mistreated by his wife (right) because according to him, she is more interested in Ali's money than his well-being

Rahman, who is younger than Muhammad by two years, said his brother is a 'prisoner in his own home'

'His wife Lonnie and her family are draining him and there's nothing I can do about it,' he said. 'In my opinion. Lonnie's evil.'

Ali was diagnosed with Parkinson's disease in 1984 but remained active for many years and made a moving appearance at the Atlanta 1996 Olympic Games where he lit the flame.

However, he was seen looking particularly thin and frail at the London 2012 Olympic opening ceremony where he was helped across the stage by wife Lonnie.

Muhammad Ali's daughter has previously countered similar remarks by Rahman over her father's condition, saying he's 'fine.'

May May Ali said she talked to her father Sunday morning on the phone and he was fine. She said he was watching the Super Bowl at home in Arizona wearing a Baltimore Ravens jersey.

'He's fine, in fact he was talking well this morning,' she said in a telephone interview with CBS this week. 'These rumors pop up every once in a while but there's nothing to them.'

Ali was diagnosed with Parkinson's disease in 1984 but remained active for many years

Rahman's charges are driven not only out of concern for his brother's well-being, but also for his own, he admitted. 

'If my brother had his faculties, I'd be living in a mansion because he always looked after me,' he said. 'As it is, we're lucky to have $150 left after paying our monthly bills.' 

Rahman is now living in a $512-a-month apartment in the family's hometown of Louisville, Ky., with his sixth wife Caroline. 

Lonnie is Muhammad Ali's third wife and has been married to him for 26 years. 

Rahman said he is concerned that Lonnie will write him out of Muhammad's will. 

Rahman Ali, born Cassius Clay, is pictured in February of 1962. Like he brother, he was a boxer

'When he dies, no one will get anything - zero,' he said of himself and Muhammad's nine children. 'I'm still in contact with his children. I just spoke to Muhammad Jr., and he was concerned about his dad. They've all tried to get in contact with him, but we've all been pushed out.' 

But Rahman appears to not be in contact with May May, as she spoke to her father as recently as Sunday.

Ali's most recent public health scare was in December of 2011 when he was taken to the hospital after falling unconscious.

Emergency services were called days after Ali made a frail appearance at the funeral of fellow boxing great Joe Frazier.

He was treated for dehydration after collapsing at his 6,000 square-foot estate in Arizona.