London Broncos prop Olsi Krasniqi has signed a new three-year deal with the Super League club.
It keeps the 19-year-old Albanian-born forward in London until November 2014.
Krasniqi featured 22 times for Harlequins, as the Broncos were then known, and scored his only try for the club on his debut against Crusaders.
"I'm really happy to have extended my contract for three years. There is nowhere else I want to be playing my rugby at the moment," he said.
Krasniqi moved to Feltham as a boy and played rugby league at school before being scouted by the London side's head of development Phil Jones.
Head coach Rob Powell added: "It is great to extend the contract of one of our most talented London players.
"It continues our philosophy of creating a squad that has a balance of London players with guys who have experience from elsewhere."