Maro Itoje has signed a contract extension with Saracens that will keep him at the club until 2022.
The England forward made his 100th appearance for Sarries in November, racking up three Premiership titles and two European Rugby Champions Cups in that time.
"I'm really pleased to be staying on at Saracens," said the 24-year-old.
"I've been at the club for 10 years now so I am really excited to see what the future holds for this great team."
Itoje has 26 international caps to his name and has also had three outings for the British and Irish Lions.
Sarries director of rugby Mark McCall cited the work the club have done in nurturing young talent.
"At Saracens, we take pride in developing players from within," he said.
"Maro is an exceptional young man, on and off the field and it’s been a privilege seeing him develop. We are thrilled he is staying with us.
"He is part of a large group of home grown players who have committed their futures to the club. We are excited about exploring their potential and where we can go as a team."
The reigning champions sit second in the table, four points behind Exeter Chiefs.