During the 2017–18 season, Salzburg had their best ever European campaign. They finished top of their Europa League group, for a record fourth time, before beating Real Sociedad and Borussia Dortmund thus making their first ever appearance in the UEFA Europa League semi-final. On 3 May 2018, he played in the Europa League semi-finals as Marseille beat Salzburg 3–2 on aggregate to secure a place in the final.