Jonathan Williams has signed a new five-year contract with Crystal Palace and will remain part of the Selhurst Park set-up until at least 2017.
The 18-year-old midfielder made his Eagles debut on 16th August 2011, stepping off the bench during a 2-1 victory over Coventry.
He made his first start in a Carling Cup tie with Crawley three days later and is the second youngest player to appear for the Wales U21 side.
Williams was drafted into the senior Welsh fold during the 2011/12 campaign and made 18 appearances for Palace.
A successful season ended with him being named the Eagles' Young Player of the Year, and he has now earned fresh terms.
"I had a plan at the beginning of the season to take this club up to the next level and this included giving me the opportunity to blood a handful of young players and get them more experience," Palace boss Dougie Freedman told the club's official website.
"Jonny is a perfect example of one of those who has stepped up to the plate during the season and with the attitude, desire and work rate he displays day in, day out he can go on and become one of the best young players in the Championship next season."
Williams added: "It feels great to have signed a five-year deal with the club I've grown up playing for. Palace is a major part of my life.
"I've had a really good season, I never expected to play 18 games, score one goal and have six assists.
"I've had time to get stronger physically and psychologically as well since I've been injured and I've had great support from the fans, my family, the staff and the players. I'm looking forward to next season now."