The Netherlands international has been struggling to get regular first team action in recent weeks, and is desperate for more playing time in the second half of the season.
"Urby is not happy at the moment," Berkleef told reporters. "Every player is going to be unhappy when they do not play regularly, and so is Urby. His lack of playing time in recent weeks kind of surprises me. I don't know the reason behind it.
He added, "I don't think that he will leave Milan, though. He is a calm guy and he will not give up just like that. He is not the type of player to start complaining and kick up a fuss."
Emanuelson has made 20 appearances in all competitions for the Rossoneri this term.