Evander Holyfield is full of confidence ahead of his fight against US compatriot Larry Donald on 13 November.
The former world heavyweight champion turns 42 in October and has won only two of his last eight fights.
But Holyfield is talking up his chances at Madison Square Garden, giving no hints of a subsequent retirement.
"The best has yet to come - you ain't seen the best yet. My goal is to be the heavyweight champ of the world again," Holyfield told Fightnews.com.
Holyfield's comeback takes place on a card of four heavyweight fights in New York.
Chris Byrd defends his IBF title against Jameel McCline, while John Ruiz puts his WBA belt on the line against Andrew Golota, while Hasim Rahman fights Kali Meehan.