Scott was given his debut by Jose Mourinho in 2017, but is now a key player at the club, competing with the likes of Paul Pogba for the central midfield spot.
McTominay after making 28 appearances in all competitions this season has been rewarded for his consistent performances with a new contract. Since making 75 appearances for the first team in 2017 he has scored six goals.
Reacting to the deal, the midfielder said: “Whilst I understand that we all have so many other things to think about at the moment, I’m so happy to sign this contract and play a part in the future ahead for this team.
“All I have ever known is United and I hope that my passion for the club shows every time I go onto the pitch. I’ll continue to give everything for this club whenever I pull on the shirt.
“I want to thank the manager for the faith he has shown in me and everyone at the club that has helped me to get where I am today. I’m looking forward to finishing this season on a high and hopefully achieving our aims.”
Solskjaer reacting to the new deal told Manutd.com.
“Scott has done tremendously well since I joined and has been a vital part of our midfield. He brings determination, tenacity and skill to the game and we know that Scott’s attributes will be a major asset to the squad over the coming years,” Solskjaer said.
“As we always say the academy is the bedrock of the club and having come through the system everyone knows that Scott has shown the exact mentality that you need to succeed at Manchester United. I look forward to seeing his continued improvement in the years to come.”