Just a year after penning pro terms, Fearon has now signed a new deal to 2028.
Fearon told the club's website: “Ever since I came to the Club when I was at U15s, I felt part of the family, and to continue to be part of the family for the next three years is a great achievement. It feels really good.
“My confidence was low after I was released (by Chelsea), but joining West Ham, working with some great coaches, especially Lauris (Coggin), who has been part of my journey since U15s through to U18s, has allowed me to express myself on the pitch and do what I love.”
Hammers football chief Mark Noble also stated: "I believe Preston has got a chance, I really do. I want the boys to not become complacent after signing a new contract. I want to push them to the next level. Never take it for granted, they've got to work hard to play for West Ham.
“You've got to stay hungry and it's down to us to keep them hungry and keep pushing them. He's got all the ingredients to be a top player and I look forward to seeing him continue pushing towards first-team football.”