The striker, who is attracting interest from Arsenal and Chelsea, claims the change to his homepage was made three weeks ago at the request of Nike
Goal.com exclusively revealed on Thursday that Arsenal and Chelsea have joined the race to sign the 27-year-old, who has already told Sir Alex Ferguson he wants to leave Old Trafford at the end of the season.
Rooney insists the change to his Twitter bio was made three weeks ago but claims the alteration was made at the request of his sponsors Nike.
“There’s a load of rubbish being written about me changing twitter bio saying I have deleted Manchester United from it," read a statement from Rooney.
"I have never deleted Manchester United from the bio whatever the papers are saying because it was never on there.
"All that happened was that I was asked by Nike to add @nikeuk to it – the same as many other sportspeople they sponsor. Funny, no-one’s written about that though!
"That change was made three weeks ago and yet people are talking about it as if its something that was put up yesterday."
A spokesman for Nike said: "In April we asked Wayne Rooney and other Nike-sponsored athletes to add nikeuk on to their profiles due to changes in ASA guidelines relating to athletes and social media."