Everton have agreed to release Steve Round, Chris Woods and Jimmy Lumsden from their coaching contracts.
The trio were contracted to the Blues but they will now move to Manchester United following discussions between the two clubs.
They will link up with former Everton manager David Moyes at Old Trafford, with the Scot taking charge of the Premier League champions today.
Round will reprise his role as Moyes' assistant, with Woods becoming goalkeeping coach and Lumsden a coach.
Woods, 53, had been Everton's goalkeeping coach since 1998 when he was brought to the club by Walter Smith. He continued the role under Moyes when he took the reins in 2002.
Lumsden, 65, had worked with Moyes at Preston and followed him to Goodison Park in the summer of 2002.
Round, 42, was appointed Everton's assistant manager in July 2008 when he arrived from Newcastle United, filling the void created when Alan Irvine, Moyes' previous deputy, left for the manager's job at Preston.