On 29 September 2012, Fenerbahçe supporters call for the resignation of Kocaman following a poor display in the Süper Lig against Kasımpaşa, while Kocaman's resignation is reportedly turned down by the club administration. Kocaman, who was called on to leave his post during the game by Fenerbahçe fans, reportedly filed his resignation after the match on 29 September 2012, but the request was turned down by club chairman Aziz Yıldırım, according to reports. The Fenerbahçe coach skipped the post-game press conference and an interview with the league's official broadcaster Lig TV and sent his assistant İsmail Kartal instead, further fueling rumors about his future at the club. On 5 October 2012, Kocaman's Fenerbahçe beat Borussia Mönchengladbach and add first win in Germany in Fenerbahçe history at European competitions, also this match was 100th Kocaman's game in career with Fenerbahçe as a manager. On 29 October 2012, Antalyaspor ends Fenerbahçe's 47-match unbeaten run in the Süper Lig at Şükrü Saracoğlu Stadium in Kadıköy had to come to an end some day with score 1–3. Fenerbahçe had not lost a single match at home in Kadıköy ever since they were beaten 2–3 by eventual champion Bursaspor in week 22, on 22 February 2010. Fenerbahçe won 38 and drew nine in the 47 matches they played within 980 days since 22 February 2010. On 3 November 2012, Fenerbahçe peck Akhisar Belediyespor to break 181-day away jinx. On 22 December 2012, after defeat to Karabükspor, Kocaman has stepped down as head of the Fenerbahçe following a 2012–13 season characterised by player conflict and unimpressive results. Kocaman addressed the press following a 3–1 loss, stating: "First of all, I want to congratulate our opponent Karabükspor. We predicted danger, but could not manage to deal with." Kocaman criticised his team's inability to counter the opposition's quick play, suggesting the warning he issued his players did not show itself during the action. "I warned players about the fast play of Karabükspor", he said. "Sometimes, no matter how much you talk, you are not prepared." Touching on his legacy with the club, Kocaman described his coaching role at Fenerbahçe as the pinnacle of his career, but admitted the toils of the position proved too demanding for him. "As a former Fenerbahçe player, being a coach in this team is the top of my coaching career. After two and a half years, I could not find enough strength to continue. "I struggled too much and I can not carry on anymore. Thanks to everyone." But on 27 December 2012, Kocaman has remained at the helm of the Fenerbahçe, retracting his decision to resign. "Kocaman has already made up his mind [to stay]," Fenerbahçe board member Abdullah Kiğılı told NTV Spor. "He will prepare a report on transfers and we will work on them. We will sign three players in January." On 14 March 2013 Kocaman's Fenerbahçe advanced to the quarter-finals in the 2012–13 UEFA Europa League with a 1–1 draw at home in its second-leg match against Czech side Viktoria Plzeň on Thursday. On 11 April 2013, Kocaman advance his team Fenerbahçe to the semi-finals in the 2012–13 UEFA Europa League, and he make the history with his club to the first time in club's history. On 2 May 2013, Fenerbahçe was eliminated by Benfica with aggregate score 3–2 in 2012–13 Europa League in semi-final, and this is the biggest success in Fenerbahçe's history to arrive into the Semi-final in European competitions. On 29 May 2013, Kocaman submits his resignation as Fenerbahçe coach, saying that he is ‘exhausted.’ The former goal-scoring great is set to leave the club only a week after leading the Istanbul club to a second successive Turkish Cup.