Ferguson infamously detailed why United turned down Henderson when he was a youngster at Sunderland, questioning his running style.
On Friday, the Scot said: "There was criticism from Brendan Rodgers about my assessment of Jordan.
"Our scouting/medical department said they weren't happy with his running style.
"They said he could be the type to get injuries. I had to make sure players would always be available.
"But we loved Jordan as a player. He has proved that now.
"All the stories I hear about him tell me that I missed out on a really good person."