Wayne Rooney
United reject initial approach from Chelsea for Wayne Rooney. (Reuters)

Chelsea have confirmed they have made a written offer to Manchester United for Wayne Rooney but have denied reports they have offered Juan Mata or David Luiz as part of the deal.

The England international's future at the club remains in severe doubt in what has been a tumultuous summer for the 27-year-old who is "angry and confused" with his current situation at Old Trafford.

A number of media reports have today suggested that Chelsea have made their first attempt to lure the former Everton striker away from Manchester with their extraordinary offer of £10m plus the services of either Mata or Luiz in exchange, but have been told by United that Rooney is not available under any circumstances.

Chelsea have since confirmed the club had made a bid for the Manchester United striker, but have denied suggestions that the club have offered any player as part of a deal to bring Rooney to Stamford Bridge, refusing to disclose any further details of their offer.

A club statement read: "Chelsea confirm that yesterday it made a written offer to Manchester United for the transfer of Wayne Rooney.

"Terms of the offer are confidential, but for avoidance of doubt and contrary to what is apparently being briefed to the press in Sydney the proposed purchase does not include the transfer or loan of any players from Chelsea to Manchester United."

The striker's United dilemma have been simmering throughout the summer ever since former United boss Sir Alex Ferguson revealed the player had handed in a transfer request at the end of last season.

United manager David Moyes has persistently maintained that the striker will not be sold this summer despite reported interest from the Blues, Arsenal and Paris Saint-Germain.

The Scot has held talks with Rooney on a number of occasions since officially taking the United reins at the start of the month, but his comments suggesting Robin van Persie will remain his first choice option up front may have further riled the frustrated Rooney.

"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 - I want as many options as possible," Moyes said earlier this week.

Comments made by United's new chief executive Ed Woodward also suggested that the club are not willing to bow to Rooney's demands. "No contract renewals are being discussed. I am not sitting down with any player on an extension and there is no trigger date in the diary," Woodward said.

"Would we be afraid to run a contract down? Of course not."

Chelsea emerged as favourties to sign the disgruntled player last week after Jose Mourinho proclaimed his admiration for the United man. Speaking from the club's Far East tour, the Blues manager stated: "He is a player I like very much but I can say no more than that. Being fast and direct, I like that, but he is a Manchester United player."

Rooney was forced to pull out of United's pre-season tour of the Far East and Australia with a hamstring injury, returning to the club's training ground to receive treatment ahead of the new season.