Stieber was expected to among players to leave the club. 1. FC Nürnberg (loan) On 18 January 2016, Stieber moved on loan to 1. FC Nürnberg. Stieber explained his decision to leave Hamburg, citing first team football in hopes of making to the Hungary squad for the UEFA Euro 2016. Stieber made his 1. FC Nürnberg debut on 6 February 2016, where he made his first start for the club, in a 1–0 win over 1860 Munich. On 4 March 2016, he scored his first goal in the season at the Grundig-Stadion in Nürnberg against 1.FC Kaiserslautern in the 88th minute, but was sent–off in the last minute after a second bookable offence. Despite this, Stieber went on to make six appearances and scoring once for 1. FC Nürnberg later in the season. Kaiserslautern After returning from the national team, Stieber announced his desire to leave Hamburger SV in order to seek first team football. it was reported on 12 August 2016, Stieber signed a three-year contract with 1. FC Kaiserslautern. Two days later, on 14 August 2016, Stieber made his Kaiserslautern debut, in the opening game of the season, where he played 26 minutes, in a 1–1 draw against Würzburger Kickers. Six days later on 20 August 2016, Stieber scored his first Kaiserslautern goal in the first round of DFB Pokal, in a 4–3 loss against Hallescher FC after the game went extra time. D.C. United On 9 August 2017, Stieber signed with Major League Soccer side D.C. United. On 27 September 2017, Stieber scored his first goal for D.C. United away against the New York Red Bulls. Stieber scored a rebounded free kick that brought the game level. The game ultimately ended in a 3–3 tie. Zoltan is well known for his great passing, free kicks, and his fast pace. Stieber finished the 2017 season, one of D.C. United's worst seasons with only one goal and one assist. After D.C. United was able to improve and get their new stadium, Audi Field in 2018, Zoltan managed to score 5 goals and 7 assists in the 2018 season. Around 2018, Stieber was slowly being pushed out of the first team, due to new arrivals like Paul Arriola and Yamil Asad. This would even continue in 2019 after Asad left, when Lucas Rodriguez joined DC United and replaced Asad. In June 2019, Stieber told a reporter that he desired to