*Club domestic league appearances and goals, correct as of 21:08, 24 August 2024 (UTC) ‡ National team caps and goals, correct as of 23:59, 8 June 2024 (UTC)
Starting his career at Langhus, he moved to Stabæk's youth section at the age of 13.[3] He signed his first professional contract with Stabæk in May 2020.[4]
He was given the chance to train with the senior team in early 2021,[5] and subsequently given a new three-year contract in May that year.[6] On 30 May 2021, he made his Eliteserien debut in against Rosenborg.[7] On 27 June 2021, he scored his first goal for the club in a 4–1 defear against Bodø/Glimt.[8] He made his full debut three days later, and scoring two goals against Viking FK.[9][10]
During the last transfer day of summer 2021, he signed a contract with Club Brugge. On 13 September 2022, he scored a goal in his Champions League debut in a 4–0 away win against Porto,[11] becoming the youngest Norwegian player to feature, and the second youngest player of any nationality to score in the competition.[12][13][14]
On 13 August 2024, Nusa signed a five-year contract with RB Leipzig in Germany.[15]