The 24-year-old's form in Serie A this season has reportedly led to a number of clubs keeping tabs on his progress.
One of those sides is believed to the Red Devils and the Morocco international has described a potential transfer to the English champions as "a dream come true".
"To be linked with Man United is a dream come true," he said.
"They are the biggest club in the world, they have fans everywhere in the world. To have an opportunity to play at Old Trafford would be amazing, believe me.
"But I have a contract with Udinese and they have to be happy before I can move. My contract finishes in June 2015."
Benatia joined Udinese in 2010 from Clermont.