 Red Bull Salzburg decided to send Roguljić back on loan to FC Liefering, their feeder team, for the 2014-15 season.Roguljić enjoyed good form for Liefering in the first half of the season and so was called up to Red Bull Salzburg's first team for their cup match against Wacker Innsbruck, where he came on as a substitute and scored the winner in extra time in a 1–2 victory.On 1 November 2014, he made his league debut against Admira Wacker, playing 46 minutes before being replaced by Konrad Laimer.