Duo had been key components in Ferguson’s Red Devils coaching setup.
Manchester United announced the departures of coaches Mike Phelan and Eric Steele from Old Trafford on Friday.
The Premier League champions have just appointed new head coach David Moyes to take over from the recently departed Sir Alex Ferguson, who announced his decision to retire from all football last month after 26 years in charge of the Red Devils.
And the former Everton boss, who officially starts his duties in the north west on 1 July, has decided that he wants to appoint his own backroom staff next season at the 20-time Premier League champions.
As a result, both Phelan and Steele will now be leaving United with immediate effect, with the former having been at the club in a coaching capacity for the past 12 years, while he also acted as Ferguson’s right-hand man since 2008.
Meanwhile Steele arrived at United in 2008 to take over from Tony Coton as the club’s first-team goalkeeping coach and he has been forced to quit his role early due to injury.
“I would like to put on record the club’s thanks for everything Mike and Eric have done,” said Moyes in a statement on the club’s official website.
“I will be looking to appoint my own members of coaching staff at some point in the future, however, I’d like to take this opportunity to give them both our best wishes for their future careers.”