Manchester United's backroom staff are fearful for their future after Sir Alex Ferguson announced he will retire as manager in the summer, ESPN understands.
Assistant manager Mike Phelan and first-team coach Rene Meulensteen are concerned that David Moyes will not want them to carry on at Old Trafford and are yet to receive assurances they will retain their jobs.
Moyes has enjoyed a close working relationship with Steve Round at Everton while Phil Neville, his captain and a former United player, has also been tipped to take a role among his assistants.
However, Neville, 36, has said he hopes to continue his playing career - although he is also considering retirement - while he could be a contender to replace Moyes at Goodison Park.
Phelan, who spent five years at United as a player, returned to the club as a coach in 1999 and was promoted to become Ferguson's assistant in 2008 after Carlos Queiroz left.
Meulensteen in his second spell on Ferguson's coaching staff, interrupted by a brief and unsuccessful stint as Brondby manager, and is particularly highly regarded.
His fellow Dutchman Robin van Persie said in February: "The way he trains is exceptional. He is truly one of the best coaches in the world.
"I have had a lot of good trainers, but it's the way he prepares our team for games. Every match is different, so every training session in the build-up to games is unique.
"We know exactly what to expect and he wins points for us through his training. We've won a lot of games by the odd goal and they are point winners, which we train for."