Heinze has reacted to recent comments made by Fergie about Real and also the Argentine's move last year.
Heinze said: "I do not know if it is true or lies, but what is for sure is that it is sad that such an experienced character as Ferguson says stupid things.
"You can understand if a fan or a player says that, but hearing it from such an experienced person is not normal. Ferguson has earned respect on and off the pitch...
"And facts speak for themselves: why did he allow me to leave whereas he would have preferred to keep me? I gave the maximum during three years there."