The Norwegian youngster was at the Riverside on Monday for the open training session and has now been officially announced as a Boro player for the new season which has already got underway with his new side sitting near the top of the table.
The 18-year-old Norway Under-21 international joined City from Rosenborg for £12.5m in June and becomes Boro's fifth summer signing after Alfie Jones, Callum Brittain, Abdoulaye Kante and Sontje Hansen.
Nypan was playing for Rosenberg’s under-19s by the age of 14 and made his first-team debut before his 16th birthday, becoming the club’s youngest debutant in doing so. Former Rosenborg academy manager Roar Vikvang told Sky Sports about Nypan and his sheer quality, which he thinks will benefit any side.
“The club that signs him is very lucky. He is something special. He’s a good player technically but what I think is very different from the other players was the mentality. How mature he is, how he understood the game. Not only his own position and what he was doing, but the other players.
“It is important for him and the team to get into the box when they are trying to finish attacks. He has a lot of skills. He can play as a number six, he will do that in a good way but then you don’t have his finishing skills. From my point of view, a number eight or ten.
“He has good technical skills, can use both feet, give crucial passes to other players and can finish. One of the strongest skills is he can get rid of players with the ball, he can go through. He is so powerful and has a huge amount of speed.”
Nypan could feature in Saturday's trip to Norwich under manager Rob Edwards, who could see the fixture as a great chance for the young star to start adapting to English football which will be a huge step-up for the teenager.