Benzema has been linked with a move to both United and Real Madrid.
Karim Djaziri told Europe1: “Ferguson wants Karim this summer, however his transfer fee will not be over 40million euros.
“He is only 21-years-old, the only time a transfer of a 21-year-old went so high it was the Robinho transfer to Real Madrid.
“Karim can’t be more valued than David Villa, who will cost more than 40million euros.
“The question is not if he will sign for one of the big clubs, but when.”