Eric Harrison has died aged 81.
Harrison was best known for developing Manchester United's famous 'Class of 92'.
He was diagnosed with Dementia four years ago and passed away with his family by his side.
In 1992, Harrison managed United's youth team that won the FA Youth Cup.
Gary Neville, David Beckham and Nicky Butt all went on to play for England, while Ryan Giggs and Robbie Savage featured for Wales.
Neville dedicated a tweet to him after hearing the news.
"We’ve lost our mentor, our coach and the man who made us," he wrote.
"He taught us how to play, how to never give up, how important it was to win your individual battles and what we needed to do to play for Manchester United Football Club.
"Eric we owe you everything."
Manchester United also took to Twitter.
"We are extremely saddened to report that our former youth coach Eric Harrison passed away last night.
"Our thoughts and prayers go out to Eric's family and friends at this sad and difficult time."
And Sir Alex Ferguson has also spoken out about Harrison.
"Eric's contribution to football and not just at Man Utd was incredible," Ferguson said, per Simon Stone.
"When I came as manager I was lucky enough to have Eric on the staff as head of youth development, so I got to see the work he did and not just with the Class of 92 but with all the young players...
“He built character + determination in those young players + prepared them for the future.
"He was a teacher, gave these players a path, a choice. He only did that through his own hard work and sacrifice. He was one of the greatest coaches of our time.”
Ferguson added: "On a personal level Eric had a wicked dry sense of humour and was straight talking and I admired that in him.”
Hired by Ron Atkinson in 1981, Harrison would spend 27 years at Old Trafford.
He was awarded the MBE for his services to football in December 2017.
Rest in peace, Eric.News Now - Sport News