Tottenham midfielder Dele Alli has signed a new contract to keep him at the club until 2021.
Alli has made a huge impact since completing his £5million move from MK Dons last summer, scoring five goals in 18 Premier League appearances.
The 19-year-old has also broken into the senior England set-up and scored his first international goal in the 2-0 victory over France in November.
"We're delighted to announce that @Dele_Alli has signed a new contract with the club which will run until 2021," Tottenham posted on their official Twitter account.
Alli signed from MK Dons in January 2015 but spent the remainder of the season on loan, helping the Buckinghamshire club into the Sky Bet Championship.
He made his Premier League debut on the opening day of this season at Manchester United and has since gone on to make 25 Spurs appearances in all competitions.
Having made his England Under-21 debut in September, he capped his meteoric rise by making his first senior appearance in a Euro 2016 qualifier against Estonia the following month.
Alli said: "The club has been really good to me since I've been here.
"We've got a great young team and I'm happy to be here.
"All the boys and staff have helped me settled in well and made it easy to go out there and do my stuff.
"That helps you with your confidence and you can focus on the football, and that's obviously important as a young footballer moving away because it can be quite scary at times."
Spurs are currently fourth in the Premier League and there is growing belief that Mauricio Pochettino's young and exciting team can mount a sustained challenge for a Champions League spot, if not compete for the title itself.
They visit fellow high-flyers Leicester City tonight, having faced the Foxes in last Sunday's FA Cup third round tie, which finished 2-2.
Jamie Vardy could make his comeback from groin injury after joining with the Foxes squad yesterday.
Claudio Ranieri said: "Now without the problem he is much better. I'll see if he starts from the beginning or if he is ready to come with me on the bench."