Paul Koller

Paul Koller made his Bundesliga debut for FC Admira Wacker Mödling in May 2021, three years after signing his first professional contract with the club. His path back to Graz began in January 2022, when he returned to Grazer AK — the club where his youth career had started — on loan for the rest of the season, before joining permanently that June.

Koller moved to SCR Altach on 1 July 2023, a transfer reported by some outlets at around €300,000, though the clubs kept the exact figure confidential. He spent three seasons in Altach before his contract ran out in the summer of 2026. On 30 January 2026 he joined SK Sturm Graz on a free transfer, with both sides again agreeing not to disclose the financial terms.

The move brought Koller back to a club with which he already had history: as a youth player, he won the Austrian Youth League U18 title with Sturm Graz. He has since become part of the Sturm Graz squad that won the Austrian Bundesliga title in the 2026/27 season.

At international level, Koller represented Austria at U21 level between 2022 and 2024, earning 12 caps and scoring three goals for the age-group side. He has not yet been capped by the senior national team.