Manchester United defender Paddy McNair has signed a new deal that will keep him at Old Trafford until 2017.
The 19-year-old has made 12 appearances for the Red Devils this term having made his debut against West Ham in September.
A statement on Manchester United's official website read: "Paddy McNair has signed a new contract at Manchester United which keeps him at the Club until at least June 2017 with an option to extend for a further year."
McNair said: "To make my debut for this great club earlier this season was a dream come true. I'm pleased to have signed a new contract.
"I have come through the Academy here and I feel I am improving my game all the time with the help of the manager, the coaching staff and my team-mates."
Red Devils boss Louis van Gaal added: "Paddy has risen through the ranks to become an integral part of the first team squad. He has all the attributes to develop into a top player.
"Promoting youth players is very important both to myself and to the club and I am delighted Paddy has signed a new contract."
McNair has taken advantage of his first-team chances thanks to Manchester United's injury problems at the back this season, and will now be looking to nail down a regular starting spot before the end of the season.
Meanwhile Van Gaal has hit back at West Ham manager Sam Allardyce's claim that his side play long-ball football. The Red Devils struggled to break down the Hammers on Sunday but eventually secured a 1-1 draw after Daley Blind pounced on a half-cleared long pass.
The Dutch boss produced a four-page dossier of stats which he claimed proved the claims wrong. He said: "You have to look at the data and then you will see that we did play long balls, but long balls wide, rather than to the striker. A ball to the forward striker is mainly called long ball play. We are playing ball possession play."