I read someone else's post explaining how as Ezio was dying, he basically hallucinated himself as a young man there, since in the end you get the credits “when i“When I was a young man I had liberty but did not see it, I had love but did not feel it” and so on, plus how the man says courage Ezio"Courage, Ezio", before leaving, and would explain why Ezio confronted him with “I don't think itsit's the women that are the problem”.
Also for the theory he was posionedpoisoned, ezioEzio showed signs through outthroughout the mini movie, of being on deaths door from simple old age, and right. Right before going to the plaza werewhere he deaddied, before his wife came ininto his office like-like room, he showed signs of a heart attack and then again in the plaza, exio. Ezio died of old age from a heart attack, a natural death.
I dontdon't want credit for the discovery of who the man was so hereshere's the site were iwhere I learned itthis: