Calderon has been angered by Ferguson's comments in a magazine interview in which the Scot claimed the Bernabeu giants liked to get everything their own way.
"I won't waste time answering him. I admire his history but recently he has gone a bit senile," Calderon said.
"Calderon has a few strange things to say every week," said the United boss.
"There is a lot of hot air comes out of that man.
"I am not getting involved but the nub of it is he is very disappointed he did not get Ronaldo.
I am delighted to say he is still here and I will keep repeating that."