Manchester United boss Sir Alex Ferguson has warned Wayne Rooney he's no longer a guaranteed starter.

The arrival of Robin van Persie and Shinji Kagawa has put real pressure on the England international.

Ferguson said: "It is early doors but with the situation we have at the moment, I don't know where I am going in the sense of what my best partnership will be because I haven't seen Rooney and Van Persie together.

"But I am happy in the knowledge I have the options there."