Goalkeeper Joel Pereira has signed a new deal to keep him at Manchester United until the summer of 2021, with the option of a further year.
The 21-year-old, who made his first-team debut in January, is highly rated at Old Trafford having impressed since joining the club in 2012.
"I have been at United for a number of years now and since the first day here I have enjoyed every minute," he told his club's official website.
"Over the last season I feel I have made great progress as a goalkeeper and this will stand me in good stead for continuing my development as a Manchester United player.
"There have been many memorable moments for me at this club - however, making my debut for the first team at Old Trafford was unbelievable for me and my family."
Manager Jose Mourinho added: "Joel progressed really well during the course of the last season through hard work and commitment every day in training.
"I know I have said this before but I really do believe, if he continues his development and continues to work hard, he really can become the best Portuguese goalkeeper of the next generation."