and scored once in all competitions. Just before the end of the season, it was announced that Leitner would return to his parent club when the 2014–15 season ended. Lazio On 12 August 2016, Lazio signed Leitner from Borussia Dortmund for a fee of €1.5 million. He was signed to replace Ogenyi Onazi, who had joined Turkish Süper Lig club Trabzonspor. On 1 October 2016 he made his Lazio debut, coming on as a late substitute in a 3–0 win over Udinese. Leitner made another appearance on 26 October 2016 in a 4–1 win over Cagliari. Leitner spent the first half of the season on the bench. He made two appearances for Lazio. FC Augsburg On 31 January 2017, Leitner was signed by Bundesliga side FC Augsburg on a four-year deal for a reported fee of €2 million. Upon joining the club, he was given the number five shirt. Leitner did not appear in the first team immediately, due to issues in adapting to the club's playing style. On 17 February 2017, he made his second debut for Augsburg in a 3–1 loss against Bayer 04 Leverkusen. Leitner made his first start on 12 March 2017 in a 3–0 loss against Schalke 04. He made six appearances for the club in the 2016–17 season. Norwich City Having failed to make an appearance in the first half of the 2017–18 season, Leitner was loaned to EFL Championship side Norwich City on 25 January 2018 for six months. His debut for Norwich City was as a substitute in a 0–1 win over Brentford on 27 January 2018. On 26 June 2018, Leitner joined the club permanently on a four-year deal for an undisclosed fee. He scored the equaliser in the first East Anglian derby of the 2018–19 season, the game finishing 1–1. With Norwich, he won promotion to the Premier League in the 2018–19 season. Afterwards, he fell out of favour and only made nine appearances in the top flight, as the club suffered relegation after one season. Despite this, Leitner remained out of the squad and made no appearances as the Canaries secured another Championship title for the 2020–21 season. Zürich On 7 August 2021, Leitner signed a one-year contract with Swiss Super League club Zürich. On 21 May 2022, Zürich announced that Leitner's contract will not be extended. International career Having made one appearance for Austria U17 - against Estonia