Rooney is becoming increasingly frustrated at his inability to make a mark on the international stage. He has told team-mates about his discontent but is yet to make his feelings known to the manager, says the News of the World.
A pal of Rooney's said: "At United it's totally different. Wayne has support from all angles - Ronaldo, Tevez, Nani and more.
"He feels isolated upfront with England and gets frustrated. He feels he is not contributing as much as he could."