Arsenal have made an opening bid for Manchester United striker Wayne Rooney.
The Sunday Mirror says Arsenal have made a £20million bid for Rooney.
The Gunners have fired the first shots in a bidding war that is sure to spark a response from Chelsea.
Jose Mourinho has Rooney at the top of his Chelsea wish-list, and is expected to make a counter-bid in an effort to beat Arsene Wenger to the 27-year-old's signature.
But senior United sources last night insisted that Rooney is not for sale.