Hammarby IF 2020 On 8 June 2020, shortly after his 18th birthday, Amoo transferred to Swedish club
Hammarby IF on a four-year contract. In the process, he reportedly turned down a move to
Monaco and
Milan. On 10 November, Amoo scored a brace, his first competitive goals for Hammarby IF, in a 5–0 win against
FC Gute in
Svenska Cupen, the main domestic cup.
2021 In 2021, following the departure of
Alexander Kačaniklić, Amoo established himself as a regular starter for Hammarby. On 7 March, he scored a long-range strike against
rivals AIK in a 3–2 home win in Svenska Cupen, which meant that his side advanced to the quarter-finals of the tournament. On 17 April, Amoo scored his first league goal in Allsvenskan for the club, in a 2–0 home win against
Mjällby AIF. On 30 May, Amoo won the
2020–21 Svenska Cupen with Hammarby, through a 5–4 win on penalties (0–0 after full-time) against
BK Häcken in the final. He featured in all six games as the side reached the play-off round of the
2021–22 UEFA Europa Conference League, after eliminating
Maribor (4–1 on aggregate) and
FK Čukarički (6–4 on aggregate), where the club was knocked out by
Basel (4–4 on aggregate) after a penalty shoot-out. Following his performances throughout the year, Amoo reportedly attracted interest from big European clubs like
Ajax,
Leicester and
Valencia.
F.C. Copenhagen On 31 January 2022, Amoo signed a five-year deal with
F.C. Copenhagen in the
Danish Superliga. The fee was reportedly set at around €4.4 million, plus bonuses and a sell-on clause, making it a record breaking transfer for Hammarby. He also became one of Copenhagen's record arrivals, in the same region as
Pep Biel and
Ísak Bergmann Jóhannesson.
Omonia On 13 September 2023, Amoo signed a three-year deal with
Omonia. On 2 March 2024, Amoo terminated his contract with Omonia for personal reasons. In February 2025, Amoo joined
China League One side
Shanghai Jiading Huilong. ==International career==