Jordan gave Michael Schumacher his F1 debut at the Belgian Grand Prix in 1991. The future legend then joined Benetton.
He won seven world championships – a joint-record he holds with Lewis Hamilton who was denied an eighth at Abu Dhabi 2021.
Video of Mick Schumacher's F1 future – STAY or GO?
Ex-F1 boss Jordan told the Irish Daily Mirror about Schumacher: “Is he the greatest driver of all time? I have some reservations about that. But that’s just me. Everyone has their own opinion.
“There’s no doubt that he certainly had the speed. But there were certain things that I never really liked about the way he went about his racing.”
Michael Schumacher now lives in Switzerland and has not been seen in public since December 2013 when he had a skiing accident that left him in a coma.
Jordan said: “I reached out and at one stage asked was it appropriate and did I think we should go and visit him?
“The answer was no. No visitations for anyone at that moment except the actual direct family.
“However, since then, young Mick Schumacher – Michael’s son – has reached out to me, and he has been extraordinary.”