West Ham defender Reece Burke has signed a new four-year contract.
The 19-year-old spent last season on loan with League One Bradford but played for the Hammers in last week's Europa League play-off round first leg against Astra Giurgiu.
Burke told his club's official website: "Obviously as a West Ham fan as well as a player, it's fantastic to be involved with the club during this period.
"It's still sinking in to be honest, the move and the changes here. Over time, I really believe everything will settle in, and it will feel like home very, very soon.