The Dutchman takes his side to Old Trafford on Monday but, if things had panned out differently during the 2003/2004 season, he could have been sat on the opposite bench. Ferguson revealed last year he approached Jol about becoming his assistant while the Dutchman was in charge at RKC Waalwijk.
"At that time I met him only to have a conversation with him about everything," the Fulham boss said. "[The chance to become his assistant] was what he said afterwards."
The move was scuppered when the United boss got wind that his former number two Carlos Queiroz wanted to return from an ill-fated spell at the Real Madrid helm. but Jol is philosophical about the missed opportunity.
He added: "I think that was good because I don't think I am the best assistant in the world. I have a good relationship with [Ferguson]. If you look at the stats, he is probably the best manager ever."
After the move to United fell through, Jol went on to manage Tottenham, Hamburg and Ajax before joining Fulham - with whom he hopes to secure his first victory over United as a manager.
The Dutchman has been thwarted in seven previous attempts against Ferguson's side, but joked he has one moral victory, recollecting the infamous Pedro Mendes 'goal that never was' after Roy Carroll dropped his long-range shot over the line at Old Trafford.
"I can remember having a few good games and draws," he said. "I can remember a game where it was 0-0, but we should have won because Pedro Mendes scored a goal that went over the line so in my mind I have beaten them once."
United come into this match looking to keep pressure on title rivals City, with the pair looking set to fight it out until the very end of the season.
"There is a small difference between two Manchester sides," Jol said. "I would not put my money on either of them. City are strong and of course United has got all the experience. It is the same as always, we will have to wait and see."
Source: PA
Source: PA