After a successful loan spell, IFK Norrköping signed Eliasson on a permanent transfer for an undisclosed fee.

[12] During the 2020–21 season, he scored 4 goals in 30 league appearances, notably including a brace in a 2–1 away win over Marseille.

[14] On 27 August 2022, AEK Athens made an official offer in the excess of €2,000,000 to acquire the services of Eliasson.

[16] Eliasson made his debut for the Sweden national team on 5 June 2024 in a friendly against Denmark.

[18] Since then, he improved greatly and his trademark goal of cutting onto his left foot and bending it to the far corner – doing this against QPR and Bolton.