Manchester United have appointed Mike Phelan as assistant manager, replacing Carlos Queiroz who left Old Trafford to become Portugal coach in July.
Phelan, a former United player who has worked his way up through the ranks of the backroom staff, has been working as a first team coach since 2001 when Steve McClaren left for Middlesbrough.
Dutchman Rene Meulensteen has also been promoted from technical skills development officer to take on Phelan's former role.
United boss Sir Alex Ferguson welcomed the two new appointments.
"I am delighted Mick and Rene have agreed to fill these important positions," he said.
"Mick knows Manchester United inside out, having been associated with the club for the best part of 20 years.
"He is a very talented and professional coach, whose ability and contribution to the club's success has often been understated."
Ferguson added: "Rene brings different ideas and experience to the role of first team coach.
"I believe the two will provide an excellent team to continue the club's willingness to try new ideas and constantly drive for success in an increasingly competitive game."