Heavyweight veteran Evander Holyfield believes that he is ready for a fifth shot at a world title against either of the Klitschko brothers.

The 49-year-old, who has lost five of his last 12 fights, said that all he needs is the approval of the Ukrainians and the bout can be matched.

Vitali and younger brother Wladimir currently hold all of the major heavyweight belts and Holyfield is keen for one last shot at glory.

"I am ready to fight for a world title, and if the Klitschko brothers are willing to fight me in the ring, I'll do everything in my power to win," Holyfield told boxingscene.com. "I just need their approval to do the fight."

Holyfield, who has faced calls to retire, beat 47-year-old Dane Brian Nielsen in his last fight.