Rosenborg In January 2022, Nypan signed his first professional contract with
Rosenborg. Just a few months later in April, Nypan signed a new contract and became a part of the first team squad. On 6 November 2022, Nypan made his Rosenborg debut when he started in a league match against
Jerv. In doing so, he became the youngest player ever to represent Rosenborg at 15 years and 322 days, beating
John Hou Sæter's record of being youngest in an official match and
Magnus Holte's record as the youngest in a league match. And since he started the match he also beat
Ola By Rise's record from 1977 as youngest to start in the league. On 13 May 2023, Nypan scored his first goal for Rosenborg in 3–2 away defeat against
Bodø/Glimt in the
Eliteserien. This made him the youngest ever goalscorer in the league for Rosenborg, aged 16 years and 145 days. In September 2023, Nypan signed a new contract with Rosenborg. On 11 October 2023, he was named by English newspaper
The Guardian as one of the best players born in 2006 worldwide.
Manchester City Amid interest from a number of clubs, on 14 June 2025,
Premier League club
Manchester City reached an agreement for the transfer of Nypan for a fee of £12.5 million. A month later, on 17 July, the deal was made official, with Nypan signing a contract until the summer of 2030. It was later reported that Nypan had verbally agreed a move to
Aston Villa before deciding to sign for City instead.
Middlesbrough (loan) On 19 August 2025, Nypan signed for
EFL Championship club
Middlesbrough on a season-long loan. On 23 August, he made his debut for the club, coming on as a 72nd-minute substitute for
Finn Azaz in a 2–1 away victory over
Norwich City in the league. On 2 February 2026, he returned to Manchester City after his loan was mutually terminated. ==International career==