Mason Greenwood has signed a new contract at Manchester United that ties him to the Premier League giants until June 2025.
United said the deal includes the option for a further year, emphasising their belief that academy product Greenwood, 19, is poised to play a big part in their future.
The teenage forward has emerged among Europe's leading players in his age group, having made his debut as a 17-year-old and been a regular within the first-team squad ever since.
Manager Ole Gunnar Solskjaer said Greenwood, who joined United's youth system as a seven-year-old, is primed to be a big part of the team in years to come.
"Mason is a fantastic talent and yet another fine example of the type of player that our academy produces," Solskjaer said.
"He has made great progress this season, showing real maturity and adaptability to his game, which has seen him develop into one of the best young players in the country."
Solskjaer believes Greenwood, who has scored just once in 18 Premier League appearances this season, has boundless scope for improvement in his game.
The United boss told the club's website: "Whilst it is easy for people outside of the club to forget that Mason is just 19, it is our job as coaches to ensure he reaches his phenomenal potential and every step we take is to help him along that path.
"Mason is naturally gifted and has a brilliant attitude; we know how important he is going to be for Manchester United over the coming seasons."
Greenwood's previous deal, signed in October 2019, would have taken him through to the end of the 2022-23 season.
Now, along with the likes of Marcus Rashford, he looks like being a long-term piece of United's first-team dressing room.
Greenwood, who has one England cap, said: "I've worked so hard to reach this level and the last two years have been amazing.
"There is so much that I want to achieve in the game and I know that this is the perfect environment to play my football.
"With the support from the manager, his coaching staff and so many great players to learn from; I know that I am developing every single day.
"There is a lot more to come from myself and this team and I am so committed to working hard week in, week out to help the group achieve success.
"I want to repay the club for the support that everyone has given me over the years and show everyone just what I am capable of."