Last year, unbeaten Ward announced his retirement from the sport after two wins over Sergey Kovalev led to him claiming three of the four recognised belts at light-heavyweight.
However, Ward has suggested that he is open to a future move into the 200lbs division in an attempt to become a three-weight world champion, but Bellew has insisted that the American would be unable to defeat him should the pair meet in the ring.
Lot of respect for this guy as a fighter and a man but he can't beat me... I'm CERTAIN of that... A proper old school fighter and a modern day legend! It would be an honour to face him.. First things first though, I'm fighting for my life on May 5th against a Dangerous man! https://t.co/0VuASmR0DY— Tony Bellew (@TonyBellew) 9 February 2018
Bellew is currently preparing to take on David Haye at heavyweight but should he record a second success over his fellow British fighter, the Liverpudlian will likely have a number of lucrative options at both cruiserweight and heavyweight.
The 35-year-old also possesses 'Emeritus' status with the WBC, meaning that he can challenge the title holder with the governing body - currently Oleksandr Usyk - if and when he chooses to return to that weight category.
Bellew vacated the WBC cruiserweight belt when agreeing to fight Haye in March 2017.