West Ham's academy manager Terry Westley will leave the club in the summer after five years in the role.
West Ham say Westley is set for a role overseas as a technical director having overseen the recent progression of players such as Declan Rice.
Westley said: "I leave West Ham United feeling huge pride and with great memories of my time here.
"We have made such positive strides forward in the last five years to modernise and evolve the academy, ensuring that West Ham's long-standing reputation as one of the finest developers of young players continues to shine.
"It was an extremely proud moment earlier this season for me to see four academy graduates - Declan Rice, Grady Diangana, Conor Coventry and Joe Powell - playing together for the first team in the League Cup tie against Macclesfield Town.
"It has also been a huge satisfaction to witness the opening of our fantastic new academy facility at Chadwell Heath in early April. Everyone who has visited so far has commented on how it has transformed the environment for the benefit of our young players, and I have no doubt that it will be a huge asset to the Club in the years to come.
"Myself and the board were both in agreement that the time is now right for a change.
"I am looking forward to new adventures with my family and to stepping away from the constant and daily demand of a full-time role within an Academy, and now it is time for someone else to take the reins going into a very exciting period for the club."