United granted Diouf work permit
Diouf, 22, signed for the Red Devils from Molde this year before returning to the Norwegian side on loan, but United manager Sir Alex Ferguson has been impressed with him in training and says he could be in line for his debut in the New Year.
"If you're talking about value then you can look at our young boy Diouf," Ferguson told United's website.
"He's been training with us and is looking very exciting."
Diouf has scored 35 goals in 74 games for Molde.