Beleck did not make any first-team appearances during the 2010–11 season, only appearing as an unused substitute in an away game against Fiorentina in May 2011. He was subsequently loaned out to AEK Athens in July 2011, on a season-long loan, ahead of the 2011–12 campaign. He made his debut for AEK in the club's 1–0 home win over Dinamo Tbilisi on 18 August 2011, in the play-off round of Europa League qualification, playing the whole match. Beleck's first goal for the club came in a 3–1 away defeat to OFI Crete on 23 October 2011, coming on as a half-time substitute with the team losing by two goals and scoring on the hour mark to briefly reduce the deficit.&lt;ref name="Games played by Steve Leo Beleck in 2011/2012"&gt;&lt;/ref&gt; He also scored in a 3–2 defeat to rivals Panathinaikos at the Olympic Stadium in November 2011. Later that month, Beleck was on hand to score twice in a 2–0 away win against Panetolikos, as well as scoring the only goal of the game a week later in the 1–0 defeat of Kerkyra. He took his goal tally to six for the season when he scored the winning goal as AEK progressed to the Fifth Round of the Greek Cup courtesy of a 1–0 win over Kalamata on 22 December 2011. Despite his strong end to 2011, Beleck did not score during the second half of the season. He made 34 appearances in all competitions, scoring six times, helping AEK Athens secure a fifth-place finish in the Greek Superleague.