According to Voetbalprimeur.nl, Oscar Pettersson has left Go Ahead Eagles on a free transfer to move to the Swedish club GAIS. The Swedish attacker and the club management reached an agreement to terminate his contract. Both parties agreed that a free departure was the best option.

Oscar Pettersson is leaving Go Ahead Eagles, and according to De Stentor, he is returning to Sweden on a free transfer to play for GAIS from Gothenburg.

GAIS is nearing an agreement to sign winger Oscar Pettersson from Go Ahead Eagles to strengthen its squad for the Allsvenskan season after recent player departures. It is reported that the parties are only details away from an agreement on a permanent transfer for the 26-year-old former BP and Blåvitt player, although nothing is finalized or signed. GAIS hopes to have him available for the upcoming cup semifinal against Mjällby. The Swedish international joined Go Ahead Eagles in February 2025 and has a contract that runs until June 2028. He has one cap for Sweden and his current Transfermarkt market value is €400k.