Wayne Rooney is on the verge of handing in a transfer request at Manchester United.Rooney is fuming at comments made by United manager David Moyes at the weekend which suggested he was now regarded as a second-choice striking option behind Robin van Persie. Rooney has taken that as a personal slight on a player who has given nine years' service to the Old Trafford cause and is "angry and confused" about his treatment. The offending words were delivered to Sunday newspaper journalists during a briefing with Moyes in Bangkok last week. Moyes said: "Overall, my thought on Wayne is that if for any reason we had an injury to Robin van Persie we are going to need him and I want as many options as possible." It has been widely interpreted as Moyes stating he regards Rooney as an understudy to the prolific Dutchman. And understandably, that has gone down very badly. A source close to the situation has highlighted Rooney's unhappiness, saying the England striker is 'confused and angry'. As far as the 27-year-old is concerned, he is at the peak of his career and has no intention of playing second fiddle to anyone, or being reduced to the ranks of becoming a squad player. With four Premier League titles and a Champions League winners' medal to his name, Rooney does not believe he has anything to prove at United.