The People:
"I've had four great years and I want to thank Sir Alex and the staff, but I have to move on.
"I am a little disappointed because I would have liked to have stayed, but I felt the deal being offered just wasn't right and I'm just looking to playing for another good club."
Although Carroll's agent, Francis Martin, has had contact with several Spanish clubs, the Irishman wants to stay in the Premiership.
Having rejected around £20,000 a week at United, Carroll would expect to collect around £30,000 at Everton - and that would be possible with Everton boss David Moyes able to sign him on a free transfer.