Feb. 3, 2013 at 4:00 PM
Muhammad Ali's brother, Rahman Ali, told The Sun "it could be days. I don't know if he'll last the summer. He's in God's hands."
Rahman also said "the worst thing to happen is not the illness, but his wife."
Muhammad Ali was diagnosed with Parkinson's in 1984, and his fragile appearance at the 2012 Olympics led to widespread comment. He was aided at the opening ceremony by his wife Lonnie. Rahman says Lonnie refuses to let the family visit the ailing legend and Muhammad Ali Jr. claims he's been "blocked" from visiting his father as well.