[2] He scored his first goal in his international debut, on 20 August 2021, in a 1–0 win against Finnish club HJK Helsinki in the play-off round of the 2021–22 UEFA Europa League.

[5] On 4 February 2022, Gümüşkaya was loaned to Süper Lig club Giresunspor for the rest of the season.

[7][8] On 25 September 2022, he made his debut with the team in a Croky Cup match against Eendracht Aalst and scored one goal in 3-1 win.

On 1 October 2022, he made his Belgian Pro League debut with the club in a 2–0 win over Zulte Waregem in home game.

[9] On 29 January 2025, Gümüşkaya was loaned to Gaziantep until the end of the season, with an option to buy.