In an interview published on Dylan's website the "Blowin' in the Wind" singer reminisced about friends and contemporaries he had recently lost.
"We were like brothers; we lived on the same street and they all left empty spaces where they used to stand. It's lonesome without them," Dylan says.
Ali's death after a long battle with Parkinson's disease hit the rock legend particularly hard, as after his passing last June he released a statement paying tribute to the boxer.