Denizli started his third term at Galatasaray with a 2–2 draw against Kasımpaşa in Süper Lig. Team was beat Bursaspor with 3-0 in Ali Sami Yen Sports Complex, which is his second match. On 8 December 2015, team draw against 1-1 with FC Astana but they took third place in UEFA Champions League C Group and qualified for 2015–16 UEFA Europa League knockout phase. He said "This was the hardest 90 minutes of my career." after the game. His last European match in 1991–92 European Cup Winners' Cup with Werder Bremen while he was a coach of Galatasaray until this match.