[3][4][5] In ahe semi-final match against AFC Eskilstuna in 2020, Nima Kadivar suffered a serious knee injury, which kept him sidelined throughout the whole 2020–21 season.
During his long rehabilitation period, he became the head coach of IFK Göteborg's women's futsal team.
Under his leadership in 2020–21, IFK Göteborg were crowned Swedish champions, after a 3–2 win over local rivals GAIS in the final.
After almost 2 years of absence due to knee injuries followed by 2 surgeries and 2 years of rehabilitation, Nima Kadivar played his first game for Hammarby futsal in February against IFK Uddevalla.
[7] He scored a goal in the opening match of their 2020 FIFA Futsal World Cup qualification campaign for a 3–1 win over Armenia on 30 January 2019.